diff --git a/screendumpLowFrame/layout/DEBIAN/postinst b/screendumpLowFrame/layout/DEBIAN/postinst
index 4018832..50227eb 100755
--- a/screendumpLowFrame/layout/DEBIAN/postinst
+++ b/screendumpLowFrame/layout/DEBIAN/postinst
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 if [ -L "/var/jb" ]; then
     launchctl unload /var/jb/Library/LaunchDaemons/com.julioverne.screendumpd.plist
@@ -8,4 +8,4 @@ else
     launchctl load /Library/LaunchDaemons/com.julioverne.screendumpd.plist
 fi
 
-exit 0;
\ No newline at end of file
+exit 0;