diff --git a/plugins/network/umts_sig b/plugins/network/umts_sig
index fd0bfc5b..b66a9b55 100755
--- a/plugins/network/umts_sig
+++ b/plugins/network/umts_sig
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # 
 # A Munin Plugin to show umts signal strength using gcom
 # Created by Derik Vercueil <jfvercueil@yahoo.co.uk>