diff --git a/test/test-fwknop.pl b/test/test-fwknop.pl
index 8c3aeb59..adb0cf3a 100755
--- a/test/test-fwknop.pl
+++ b/test/test-fwknop.pl
@@ -2810,7 +2810,7 @@ sub insert_dupe_rule() {
 
     &cache_fw_policy($cmd_out_tmp);
 
-until($time_now + 45 == time()) {
+until($time_now + 44 < time()) {
 sleep 1;
 }
     return;