diff --git a/Code/Mantid/Build/Jenkins/buildscript b/Code/Mantid/Build/Jenkins/buildscript
index aab6f8d3ab9ed153489dfb5eab863b331e92ea06..e129f706d8059d91b165595bbf2bfb3eae8c12b0 100755
--- a/Code/Mantid/Build/Jenkins/buildscript
+++ b/Code/Mantid/Build/Jenkins/buildscript
@@ -1,4 +1,4 @@
-#!/bin/sh -ex
+#!/bin/bash -ex
 ###############################################################################
 # LINUX/MAC SCRIPT TO DRIVE THE JENKINS BUILDS OF MANTID.
 #