diff --git a/iup/files/sbin/iup b/iup/files/sbin/iup
index da30a2c71..7d61b80aa 100755
--- a/iup/files/sbin/iup
+++ b/iup/files/sbin/iup
@@ -1,4 +1,4 @@
-!/bin/sh
+#!/bin/sh
 
 . /lib/functions.sh
 . /usr/share/libubox/jshn.sh