diff --git a/iucvterm/bin/chiucvallow.in b/iucvterm/bin/chiucvallow.in
index b48f5d31..f276690a 100755
--- a/iucvterm/bin/chiucvallow.in
+++ b/iucvterm/bin/chiucvallow.in
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #
 # z/VM IUCV HVC device driver -- Edit z/VM user ID filter
 #