diff --git a/cluster/apt.check.update.sh b/cluster/apt.check.update.sh
index 8b67731..e42987f 100755
--- a/cluster/apt.check.update.sh
+++ b/cluster/apt.check.update.sh
@@ -63,7 +63,7 @@ debug_message() {                                               # {{{
 
 }
 # }}}
-is_apt_upgrade_absent() {                                                # {{{
+is_apt_upgrade_absent() {                                       # {{{
 
 	## Count the number of upgradable packages and substract 1 for the header
 	local_apt_upgrade_number="$(apt list --upgradable \
@@ -87,7 +87,7 @@ APT upgrade available for this system: ${RED}${local_apt_upgrade_number:=/dev/nu
 
 }
 # }}}
-is_apt_upgrade_present() {                                                # {{{
+is_apt_upgrade_present() {                                      # {{{
 
 	## Count the number of upgradable packages and substract 1 for the header
 	local_apt_upgrade_number="$(apt list --upgradable \
@@ -125,11 +125,12 @@ main() {                                                        # {{{
 	## If APT package upgrade is available
 	### Disable SGE queue
 	is_apt_upgrade_present \
-		&& sh "${disable_host_queue_script}"
+		&& sh "${disable_host_queue_script}" \
+		&& exit 0
 
 }
 # }}}
 
 main
 
-exit 0
+exit 255