diff --git a/tests/integration/test_cli.sh b/tests/integration/test_cli.sh
index 121af3386..d0f6f3a1b 100755
--- a/tests/integration/test_cli.sh
+++ b/tests/integration/test_cli.sh
@@ -68,7 +68,7 @@ test_cancel_command() {
     send_command_to_commissioner "borderagent discover" "CANCELLED" &
     sleep 1
 
-    pkill -s SIGINT "${COMMISSIONER_CLI}"
+    pkill --signal SIGINT "${COMMISSIONER_CLI}"
 
     stop_commissioner
 }