diff --git a/monkey_island/deb-package/DEBIAN/control b/monkey_island/deb-package/DEBIAN/control
index e56705e37..ecbd75cc6 100644
--- a/monkey_island/deb-package/DEBIAN/control
+++ b/monkey_island/deb-package/DEBIAN/control
@@ -3,6 +3,6 @@ Architecture: amd64
 Maintainer: Guardicore
 Homepage: http://www.guardicore.com
 Priority: optional
-Version: VERSION
+Version: 1.0
 Description: Guardicore Infection Monkey Island (C&C) installation package
 Depends: openssl, python-pip
diff --git a/monkey_island/deb-package/DEBIAN/postinst b/monkey_island/deb-package/DEBIAN/postinst
index 22f24e715..f30767760 100644
--- a/monkey_island/deb-package/DEBIAN/postinst
+++ b/monkey_island/deb-package/DEBIAN/postinst
@@ -25,4 +25,6 @@ ${MONKEY_FOLDER}/create_certificate.sh
 service monkey-island start
 service monkey-mongo start
 
-echo Monkey Island installation ended
\ No newline at end of file
+echo Monkey Island installation ended
+
+exit 0
\ No newline at end of file
diff --git a/monkey_island/deb-package/DEBIAN/prerm b/monkey_island/deb-package/DEBIAN/prerm
index 9c49e0cd7..e7924c738 100644
--- a/monkey_island/deb-package/DEBIAN/prerm
+++ b/monkey_island/deb-package/DEBIAN/prerm
@@ -5,5 +5,7 @@ service monkey-mongo stop || true
 
 rm -f /etc/init/monkey-island.conf
 rm -f /etc/init/monkey-mongo.conf
-rm /lib/systemd/system/monkey-island.service
-rm /lib/systemd/system/monkey-mongo.service
\ No newline at end of file
+[ -f "/lib/systemd/system/monkey-island.service" ] && rm -f /lib/systemd/system/monkey-island.service
+[ -f "/lib/systemd/system/monkey-mongo.service" ] && rm -f /lib/systemd/system/monkey-mongo.service
+
+exit 0
\ No newline at end of file