diff --git a/screendump/layout/DEBIAN/postinst b/screendump/layout/DEBIAN/postinst
index 27a41e9..afc870c 100644
--- a/screendump/layout/DEBIAN/postinst
+++ b/screendump/layout/DEBIAN/postinst
@@ -1,6 +1,6 @@
-#!/bin/bash
+#!/bin/sh
 
-launchctl unload //Library/LaunchDaemons/com.julioverne.screendumpd.plist
-launchctl load //Library/LaunchDaemons/com.julioverne.screendumpd.plist
+launchctl unload /Library/LaunchDaemons/com.julioverne.screendumpd.plist
+launchctl load /Library/LaunchDaemons/com.julioverne.screendumpd.plist
 
-exit 0;
\ No newline at end of file
+exit 0;
diff --git a/screendump/layout/DEBIAN/postrm b/screendump/layout/DEBIAN/postrm
index ab06c08..6f70c14 100644
--- a/screendump/layout/DEBIAN/postrm
+++ b/screendump/layout/DEBIAN/postrm
@@ -1,5 +1,5 @@
-#!/bin/bash
+#!/bin/sh
 
-launchctl unload //Library/LaunchDaemons/com.julioverne.screendumpd.plist
+launchctl unload /Library/LaunchDaemons/com.julioverne.screendumpd.plist
 
-exit 0;
\ No newline at end of file
+exit 0;
diff --git a/screendumpLowFrame/layout/DEBIAN/postinst b/screendumpLowFrame/layout/DEBIAN/postinst
index 27a41e9..b39d767 100644
--- a/screendumpLowFrame/layout/DEBIAN/postinst
+++ b/screendumpLowFrame/layout/DEBIAN/postinst
@@ -1,6 +1,6 @@
-#!/bin/bash
+#!/bin/sh
 
 launchctl unload //Library/LaunchDaemons/com.julioverne.screendumpd.plist
 launchctl load //Library/LaunchDaemons/com.julioverne.screendumpd.plist
 
-exit 0;
\ No newline at end of file
+exit 0;
diff --git a/screendumpLowFrame/layout/DEBIAN/postrm b/screendumpLowFrame/layout/DEBIAN/postrm
index ab06c08..e5f27c3 100644
--- a/screendumpLowFrame/layout/DEBIAN/postrm
+++ b/screendumpLowFrame/layout/DEBIAN/postrm
@@ -1,5 +1,5 @@
-#!/bin/bash
+#!/bin/sh
 
 launchctl unload //Library/LaunchDaemons/com.julioverne.screendumpd.plist
 
-exit 0;
\ No newline at end of file
+exit 0;