diff --git a/debian/tests/timedated b/debian/tests/timedated
index 23e6379d2..6e718e3c0 100755
--- a/debian/tests/timedated
+++ b/debian/tests/timedated
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 set -e
 
 . `dirname $0`/assert.sh