diff --git a/tools/shell/regression/testcases/xmlonly.sh b/tools/shell/regression/testcases/xmlonly.sh
index 593834d3d9..15e64274ab 100755
--- a/tools/shell/regression/testcases/xmlonly.sh
+++ b/tools/shell/regression/testcases/xmlonly.sh
@@ -1,4 +1,5 @@
+#!/bin/sh
 #
 # extract the xml cib
 #
 sed -n '/^<?xml/,/^<\/cib>/p'