diff --git a/install/scripts/config-services.php b/install/scripts/config-services.php
index 1db14065..9ba08d08 100755
--- a/install/scripts/config-services.php
+++ b/install/scripts/config-services.php
@@ -28,5 +28,5 @@ try {
 	\Froxlor\Cli\ConfigServicesCmd::processParameters($argc, $argv);
 } catch (Exception $e) {
 	\Froxlor\Cli\ConfigServicesCmd::printerr($e->getMessage());
-	exit 1;
+	exit(1);
 }
diff --git a/install/scripts/switch-server-ip.php b/install/scripts/switch-server-ip.php
index e1032687..b76e5b3c 100755
--- a/install/scripts/switch-server-ip.php
+++ b/install/scripts/switch-server-ip.php
@@ -28,5 +28,5 @@ try {
 	\Froxlor\Cli\SwitchServerIpCmd::processParameters($argc, $argv);
 } catch (Exception $e) {
 	\Froxlor\Cli\SwitchServerIpCmd::printerr($e->getMessage());
-	exit 1;
+	exit(1);
 }
diff --git a/scripts/php-sessionclean.php b/scripts/php-sessionclean.php
index c97c2aed..b63100b5 100755
--- a/scripts/php-sessionclean.php
+++ b/scripts/php-sessionclean.php
@@ -28,4 +28,5 @@ try {
 	\Froxlor\Cli\PhpSessioncleanCmd::processParameters($argc, $argv);
 } catch (Exception $e) {
 	\Froxlor\Cli\PhpSessioncleanCmd::printerr($e->getMessage());
+	exit(1);
 }