diff --git a/scripts/postfixadmin-cli.php b/scripts/postfixadmin-cli.php
index 2a05d20e..ae569afe 100644
--- a/scripts/postfixadmin-cli.php
+++ b/scripts/postfixadmin-cli.php
@@ -411,6 +411,6 @@ try {
     $dispatcher->stderr("Execution Exception: " . $e->getMessage());
     $retval = 1;
 }
-exit($retval);
+exit($retval ?? 0);
 
 /* vim: set expandtab softtabstop=4 tabstop=4 shiftwidth=4: */