diff --git a/bin/tests/system/tools/tests.sh b/bin/tests/system/tools/tests.sh
index 4132d99985..998b266995 100644
--- a/bin/tests/system/tools/tests.sh
+++ b/bin/tests/system/tools/tests.sh
@@ -1,4 +1,4 @@
-#!/usr/sh
+#!/bin/sh
 # Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 #
 # SPDX-License-Identifier: MPL-2.0