diff --git a/src/analyzer/protocol/bittorrent/Plugin.cc b/src/analyzer/protocol/bittorrent/Plugin.cc
index 2625a4268a..b36bb9c64d 100644
--- a/src/analyzer/protocol/bittorrent/Plugin.cc
+++ b/src/analyzer/protocol/bittorrent/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/conn-size/Plugin.cc b/src/analyzer/protocol/conn-size/Plugin.cc
index 38b96332f3..512fa71330 100644
--- a/src/analyzer/protocol/conn-size/Plugin.cc
+++ b/src/analyzer/protocol/conn-size/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/dce-rpc/Plugin.cc b/src/analyzer/protocol/dce-rpc/Plugin.cc
index 5a70f5dd50..da2250adac 100644
--- a/src/analyzer/protocol/dce-rpc/Plugin.cc
+++ b/src/analyzer/protocol/dce-rpc/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/dhcp/Plugin.cc b/src/analyzer/protocol/dhcp/Plugin.cc
index d4c5a42d01..424f9d3a19 100644
--- a/src/analyzer/protocol/dhcp/Plugin.cc
+++ b/src/analyzer/protocol/dhcp/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/dnp3/Plugin.cc b/src/analyzer/protocol/dnp3/Plugin.cc
index eb0def9eb4..d9a2ad6713 100644
--- a/src/analyzer/protocol/dnp3/Plugin.cc
+++ b/src/analyzer/protocol/dnp3/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/dns/Plugin.cc b/src/analyzer/protocol/dns/Plugin.cc
index e5d57661ff..e57c076acd 100644
--- a/src/analyzer/protocol/dns/Plugin.cc
+++ b/src/analyzer/protocol/dns/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/file/Plugin.cc b/src/analyzer/protocol/file/Plugin.cc
index d107cf8a10..eb851aa570 100644
--- a/src/analyzer/protocol/file/Plugin.cc
+++ b/src/analyzer/protocol/file/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/finger/legacy/Plugin.cc b/src/analyzer/protocol/finger/legacy/Plugin.cc
index 8f10c0e525..69e271999a 100644
--- a/src/analyzer/protocol/finger/legacy/Plugin.cc
+++ b/src/analyzer/protocol/finger/legacy/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/ftp/Plugin.cc b/src/analyzer/protocol/ftp/Plugin.cc
index 8c255e8029..3f8c01760e 100644
--- a/src/analyzer/protocol/ftp/Plugin.cc
+++ b/src/analyzer/protocol/ftp/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/gnutella/Plugin.cc b/src/analyzer/protocol/gnutella/Plugin.cc
index f6ce79611c..c6526730b5 100644
--- a/src/analyzer/protocol/gnutella/Plugin.cc
+++ b/src/analyzer/protocol/gnutella/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/gssapi/Plugin.cc b/src/analyzer/protocol/gssapi/Plugin.cc
index a009e903bb..37136278c9 100644
--- a/src/analyzer/protocol/gssapi/Plugin.cc
+++ b/src/analyzer/protocol/gssapi/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/http/Plugin.cc b/src/analyzer/protocol/http/Plugin.cc
index a0753df0b8..fdd7b953d0 100644
--- a/src/analyzer/protocol/http/Plugin.cc
+++ b/src/analyzer/protocol/http/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/ident/Plugin.cc b/src/analyzer/protocol/ident/Plugin.cc
index 9e432412e2..60cf0d04d7 100644
--- a/src/analyzer/protocol/ident/Plugin.cc
+++ b/src/analyzer/protocol/ident/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/imap/Plugin.cc b/src/analyzer/protocol/imap/Plugin.cc
index 32b1bde50f..b55e3a72e5 100644
--- a/src/analyzer/protocol/imap/Plugin.cc
+++ b/src/analyzer/protocol/imap/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/irc/Plugin.cc b/src/analyzer/protocol/irc/Plugin.cc
index d1f323832a..d0d6a7950a 100644
--- a/src/analyzer/protocol/irc/Plugin.cc
+++ b/src/analyzer/protocol/irc/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/krb/Plugin.cc b/src/analyzer/protocol/krb/Plugin.cc
index 2cd808d6ab..7ec24f8b92 100644
--- a/src/analyzer/protocol/krb/Plugin.cc
+++ b/src/analyzer/protocol/krb/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/login/Plugin.cc b/src/analyzer/protocol/login/Plugin.cc
index c154ab9ba1..c61ffaffba 100644
--- a/src/analyzer/protocol/login/Plugin.cc
+++ b/src/analyzer/protocol/login/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/mime/Plugin.cc b/src/analyzer/protocol/mime/Plugin.cc
index 3864f40b98..24e7557a2d 100644
--- a/src/analyzer/protocol/mime/Plugin.cc
+++ b/src/analyzer/protocol/mime/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/modbus/Plugin.cc b/src/analyzer/protocol/modbus/Plugin.cc
index cdf9b3e18d..38ef4801ac 100644
--- a/src/analyzer/protocol/modbus/Plugin.cc
+++ b/src/analyzer/protocol/modbus/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/mqtt/MQTT.cc b/src/analyzer/protocol/mqtt/MQTT.cc
index 795c3e0014..dc6ca77e3f 100644
--- a/src/analyzer/protocol/mqtt/MQTT.cc
+++ b/src/analyzer/protocol/mqtt/MQTT.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/analyzer/protocol/mqtt/MQTT.h"
 
diff --git a/src/analyzer/protocol/mqtt/Plugin.cc b/src/analyzer/protocol/mqtt/Plugin.cc
index b30abfaea8..be9771e4e3 100644
--- a/src/analyzer/protocol/mqtt/Plugin.cc
+++ b/src/analyzer/protocol/mqtt/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/ncp/Plugin.cc b/src/analyzer/protocol/ncp/Plugin.cc
index 29f40948ad..29e269d506 100644
--- a/src/analyzer/protocol/ncp/Plugin.cc
+++ b/src/analyzer/protocol/ncp/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/netbios/Plugin.cc b/src/analyzer/protocol/netbios/Plugin.cc
index e4cacc57fe..261ad40350 100644
--- a/src/analyzer/protocol/netbios/Plugin.cc
+++ b/src/analyzer/protocol/netbios/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/ntlm/Plugin.cc b/src/analyzer/protocol/ntlm/Plugin.cc
index 996bf8f013..ef3c1201ab 100644
--- a/src/analyzer/protocol/ntlm/Plugin.cc
+++ b/src/analyzer/protocol/ntlm/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/ntp/Plugin.cc b/src/analyzer/protocol/ntp/Plugin.cc
index d625658392..ebb07efd33 100644
--- a/src/analyzer/protocol/ntp/Plugin.cc
+++ b/src/analyzer/protocol/ntp/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/pia/Plugin.cc b/src/analyzer/protocol/pia/Plugin.cc
index 36ac9e90aa..1ccde06253 100644
--- a/src/analyzer/protocol/pia/Plugin.cc
+++ b/src/analyzer/protocol/pia/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/pop3/Plugin.cc b/src/analyzer/protocol/pop3/Plugin.cc
index 5b1d0f7f3d..9e8f41a7fe 100644
--- a/src/analyzer/protocol/pop3/Plugin.cc
+++ b/src/analyzer/protocol/pop3/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/radius/Plugin.cc b/src/analyzer/protocol/radius/Plugin.cc
index 2e1565dd70..ca61e3e09d 100644
--- a/src/analyzer/protocol/radius/Plugin.cc
+++ b/src/analyzer/protocol/radius/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/rpc/Plugin.cc b/src/analyzer/protocol/rpc/Plugin.cc
index 43ca97c49f..8b939d4e06 100644
--- a/src/analyzer/protocol/rpc/Plugin.cc
+++ b/src/analyzer/protocol/rpc/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/sip/Plugin.cc b/src/analyzer/protocol/sip/Plugin.cc
index f8a1ff3b67..ec6fcd10ac 100644
--- a/src/analyzer/protocol/sip/Plugin.cc
+++ b/src/analyzer/protocol/sip/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/smb/Plugin.cc b/src/analyzer/protocol/smb/Plugin.cc
index 6730418569..3caaf28cec 100644
--- a/src/analyzer/protocol/smb/Plugin.cc
+++ b/src/analyzer/protocol/smb/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/smtp/Plugin.cc b/src/analyzer/protocol/smtp/Plugin.cc
index b27747f2e3..c93c421d6e 100644
--- a/src/analyzer/protocol/smtp/Plugin.cc
+++ b/src/analyzer/protocol/smtp/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/snmp/Plugin.cc b/src/analyzer/protocol/snmp/Plugin.cc
index 2cfde7a67d..a7e20b1499 100644
--- a/src/analyzer/protocol/snmp/Plugin.cc
+++ b/src/analyzer/protocol/snmp/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/socks/Plugin.cc b/src/analyzer/protocol/socks/Plugin.cc
index 9a4f051127..ce06bf419f 100644
--- a/src/analyzer/protocol/socks/Plugin.cc
+++ b/src/analyzer/protocol/socks/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/ssh/Plugin.cc b/src/analyzer/protocol/ssh/Plugin.cc
index 3fa882b55f..ba2d9a8a95 100644
--- a/src/analyzer/protocol/ssh/Plugin.cc
+++ b/src/analyzer/protocol/ssh/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/ssl/Plugin.cc b/src/analyzer/protocol/ssl/Plugin.cc
index a807089e3c..c42d189fd6 100644
--- a/src/analyzer/protocol/ssl/Plugin.cc
+++ b/src/analyzer/protocol/ssl/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/syslog/legacy/Plugin.cc b/src/analyzer/protocol/syslog/legacy/Plugin.cc
index 4db0ce8262..16a879e721 100644
--- a/src/analyzer/protocol/syslog/legacy/Plugin.cc
+++ b/src/analyzer/protocol/syslog/legacy/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/tcp/Plugin.cc b/src/analyzer/protocol/tcp/Plugin.cc
index 74b467cd11..d21f5ccda6 100644
--- a/src/analyzer/protocol/tcp/Plugin.cc
+++ b/src/analyzer/protocol/tcp/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/websocket/WebSocket.cc b/src/analyzer/protocol/websocket/WebSocket.cc
index 8cd47aeefc..870a38d023 100644
--- a/src/analyzer/protocol/websocket/WebSocket.cc
+++ b/src/analyzer/protocol/websocket/WebSocket.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/analyzer/protocol/websocket/WebSocket.h"
 
diff --git a/src/analyzer/protocol/xmpp/Plugin.cc b/src/analyzer/protocol/xmpp/Plugin.cc
index fd9f90a08c..f1ea2aacf4 100644
--- a/src/analyzer/protocol/xmpp/Plugin.cc
+++ b/src/analyzer/protocol/xmpp/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/analyzer/protocol/zip/Plugin.cc b/src/analyzer/protocol/zip/Plugin.cc
index 7347ca764b..1fffee9fe1 100644
--- a/src/analyzer/protocol/zip/Plugin.cc
+++ b/src/analyzer/protocol/zip/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/file_analysis/analyzer/data_event/Plugin.cc b/src/file_analysis/analyzer/data_event/Plugin.cc
index 6150af66cf..997f451584 100644
--- a/src/file_analysis/analyzer/data_event/Plugin.cc
+++ b/src/file_analysis/analyzer/data_event/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/file_analysis/analyzer/entropy/Plugin.cc b/src/file_analysis/analyzer/entropy/Plugin.cc
index 8238131d4c..cabb47f220 100644
--- a/src/file_analysis/analyzer/entropy/Plugin.cc
+++ b/src/file_analysis/analyzer/entropy/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/file_analysis/analyzer/extract/Plugin.cc b/src/file_analysis/analyzer/extract/Plugin.cc
index ea8a7201a4..f08101dfa1 100644
--- a/src/file_analysis/analyzer/extract/Plugin.cc
+++ b/src/file_analysis/analyzer/extract/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/file_analysis/analyzer/hash/Plugin.cc b/src/file_analysis/analyzer/hash/Plugin.cc
index 741289dc7b..833da66e1f 100644
--- a/src/file_analysis/analyzer/hash/Plugin.cc
+++ b/src/file_analysis/analyzer/hash/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/file_analysis/analyzer/pe/Plugin.cc b/src/file_analysis/analyzer/pe/Plugin.cc
index cee234abb4..adb5203b14 100644
--- a/src/file_analysis/analyzer/pe/Plugin.cc
+++ b/src/file_analysis/analyzer/pe/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/file_analysis/analyzer/x509/Plugin.cc b/src/file_analysis/analyzer/x509/Plugin.cc
index 84b8801b88..6e01516140 100644
--- a/src/file_analysis/analyzer/x509/Plugin.cc
+++ b/src/file_analysis/analyzer/x509/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/input/readers/ascii/Plugin.cc b/src/input/readers/ascii/Plugin.cc
index 2cbd2478cd..bec5775772 100644
--- a/src/input/readers/ascii/Plugin.cc
+++ b/src/input/readers/ascii/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/input/readers/benchmark/Plugin.cc b/src/input/readers/benchmark/Plugin.cc
index 13b55a447f..bc8fd989d1 100644
--- a/src/input/readers/benchmark/Plugin.cc
+++ b/src/input/readers/benchmark/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/input/readers/binary/Plugin.cc b/src/input/readers/binary/Plugin.cc
index f6987bb91b..1481d6be0f 100644
--- a/src/input/readers/binary/Plugin.cc
+++ b/src/input/readers/binary/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/input/readers/config/Plugin.cc b/src/input/readers/config/Plugin.cc
index bbf45eeabc..ac79045dc2 100644
--- a/src/input/readers/config/Plugin.cc
+++ b/src/input/readers/config/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/input/readers/raw/Plugin.cc b/src/input/readers/raw/Plugin.cc
index 1f1af5c931..757e989836 100644
--- a/src/input/readers/raw/Plugin.cc
+++ b/src/input/readers/raw/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/input/readers/raw/Plugin.h"
 
diff --git a/src/input/readers/raw/Plugin.h b/src/input/readers/raw/Plugin.h
index 88bd662108..d15ecdbe33 100644
--- a/src/input/readers/raw/Plugin.h
+++ b/src/input/readers/raw/Plugin.h
@@ -1,4 +1,4 @@
-// See the file in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #pragma once
 
diff --git a/src/input/readers/sqlite/Plugin.cc b/src/input/readers/sqlite/Plugin.cc
index 0448f8105e..cdba61d2b8 100644
--- a/src/input/readers/sqlite/Plugin.cc
+++ b/src/input/readers/sqlite/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/iosource/pcap/Dumper.h b/src/iosource/pcap/Dumper.h
index e5b0923408..81abe23936 100644
--- a/src/iosource/pcap/Dumper.h
+++ b/src/iosource/pcap/Dumper.h
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #pragma once
 
diff --git a/src/iosource/pcap/Plugin.cc b/src/iosource/pcap/Plugin.cc
index 846dbc6738..f74aa39927 100644
--- a/src/iosource/pcap/Plugin.cc
+++ b/src/iosource/pcap/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/iosource/pcap/Source.cc b/src/iosource/pcap/Source.cc
index be01e148cc..9bb3d7833e 100644
--- a/src/iosource/pcap/Source.cc
+++ b/src/iosource/pcap/Source.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/iosource/pcap/Source.h"
 
diff --git a/src/logging/writers/ascii/Plugin.cc b/src/logging/writers/ascii/Plugin.cc
index 944cdf0605..d7b640b32c 100644
--- a/src/logging/writers/ascii/Plugin.cc
+++ b/src/logging/writers/ascii/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/logging/writers/none/Plugin.cc b/src/logging/writers/none/Plugin.cc
index b6a093adfa..d07087006f 100644
--- a/src/logging/writers/none/Plugin.cc
+++ b/src/logging/writers/none/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/logging/writers/sqlite/Plugin.cc b/src/logging/writers/sqlite/Plugin.cc
index 461c78e923..97f59036e8 100644
--- a/src/logging/writers/sqlite/Plugin.cc
+++ b/src/logging/writers/sqlite/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/packet_analysis/protocol/gtpv1/Plugin.cc b/src/packet_analysis/protocol/gtpv1/Plugin.cc
index f19478ac0f..461832ca55 100644
--- a/src/packet_analysis/protocol/gtpv1/Plugin.cc
+++ b/src/packet_analysis/protocol/gtpv1/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"
 
diff --git a/src/packet_analysis/protocol/teredo/Plugin.cc b/src/packet_analysis/protocol/teredo/Plugin.cc
index 2a35a5b847..e0a36a116a 100644
--- a/src/packet_analysis/protocol/teredo/Plugin.cc
+++ b/src/packet_analysis/protocol/teredo/Plugin.cc
@@ -1,4 +1,4 @@
-// See the file  in the main distribution directory for copyright.
+// See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/plugin/Plugin.h"