diff --git a/src/script_opt/DefItem.cc b/src/script_opt/DefItem.cc
index d5c7c8dd40..1c3ec90688 100644
--- a/src/script_opt/DefItem.cc
+++ b/src/script_opt/DefItem.cc
@@ -1,7 +1,7 @@
 // See the file "COPYING" in the main distribution directory for copyright.
 
-#include "DefItem.h"
-#include "Expr.h"
+#include "zeek/Expr.h"
+#include "zeek/script_opt/DefItem.h"
 
 
 namespace zeek::detail {
diff --git a/src/script_opt/ReachingDefs.cc b/src/script_opt/ReachingDefs.cc
index 9271ca49ed..d74db1d5a2 100644
--- a/src/script_opt/ReachingDefs.cc
+++ b/src/script_opt/ReachingDefs.cc
@@ -1,7 +1,7 @@
 // See the file "COPYING" in the main distribution directory for copyright.
 
 #include "zeek/script_opt/ReachingDefs.h"
-#include "Desc.h"
+#include "zeek/Desc.h"
 
 
 namespace zeek::detail {
diff --git a/src/script_opt/Reduce.cc b/src/script_opt/Reduce.cc
index ce13b5063b..05b5efc283 100644
--- a/src/script_opt/Reduce.cc
+++ b/src/script_opt/Reduce.cc
@@ -1,13 +1,13 @@
 // See the file "COPYING" in the main distribution directory for copyright.
 
-#include "ID.h"
-#include "Var.h"
-#include "Scope.h"
-#include "Expr.h"
-#include "Stmt.h"
-#include "Desc.h"
-#include "ProfileFunc.h"
-#include "Reporter.h"
+#include "zeek/ID.h"
+#include "zeek/Var.h"
+#include "zeek/Scope.h"
+#include "zeek/Expr.h"
+#include "zeek/Stmt.h"
+#include "zeek/Desc.h"
+#include "zeek/Reporter.h"
+#include "zeek/script_opt/ProfileFunc.h"
 #include "zeek/script_opt/Reduce.h"
 #include "zeek/script_opt/TempVar.h"