diff --git a/web/includes/actions/monitor.php b/web/includes/actions/monitor.php
index 1c6e1f72f..ee041967c 100644
--- a/web/includes/actions/monitor.php
+++ b/web/includes/actions/monitor.php
@@ -205,7 +205,7 @@ if ( $action == 'save' ) {
         } // end if changes in width or height
       } else {
         global $error_message;
-        $error_message = dbError();
+        $error_message = dbError('unknown');
       } // end if successful save
       $restart = true;
     } else { // new monitor