diff --git a/judge/runguard_test/runguard_test.sh b/judge/runguard_test/runguard_test.sh
index 453781b534..6ce5b7650a 100755
--- a/judge/runguard_test/runguard_test.sh
+++ b/judge/runguard_test/runguard_test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash -x
+#!/bin/bash
 
 cd "$(dirname "${BASH_SOURCE}")"