diff --git a/test/test_masscanned.py b/test/test_masscanned.py
index 54fee57..044a295 100755
--- a/test/test_masscanned.py
+++ b/test/test_masscanned.py
@@ -20,6 +20,7 @@ import atexit
 import functools
 import logging
 import os
+from signal import SIGINT
 import subprocess
 import sys
 from time import sleep
@@ -193,16 +194,16 @@ except AssertionError:
     result = -1
 
 # terminate masscanned
-masscanned.kill()
+masscanned.send_signal(SIGINT)
 masscanned.wait()
 # terminate capture
 if TCPDUMP:
-    tcpdump.kill()
+    tcpdump.send_signal(SIGINT)
     tcpdump.wait()
 if ZEEK_PASSIVERECON:
-    zeek.kill()
+    zeek.send_signal(SIGINT)
     zeek.wait()
 if P0F:
-    p0f.kill()
+    p0f.send_signal(SIGINT)
     p0f.wait()
 sys.exit(result)