diff --git a/server/usr/local/bin/rs-rotate b/server/usr/local/bin/rs-rotate
index cfe2779..4da5a3e 100755
--- a/server/usr/local/bin/rs-rotate
+++ b/server/usr/local/bin/rs-rotate
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 if [ "$1" == "" ]; then
 	echo "Usage: $(basename $0) <rsnapshot config>"