diff --git a/kubernetes/contrib/tools/rke/rke_setup.sh b/kubernetes/contrib/tools/rke/rke_setup.sh
index 2ee123b..a8938a9 100755
--- a/kubernetes/contrib/tools/rke/rke_setup.sh
+++ b/kubernetes/contrib/tools/rke/rke_setup.sh
@@ -1,4 +1,5 @@
-#!/bin/bash
+#!/bin/sh
+
 #############################################################################
 # Copyright © 2019 Bell.
 #