diff --git a/include/simpleplugin/class_simplePlugin.inc b/include/simpleplugin/class_simplePlugin.inc
index d5cc27fe26f18d1c5d9474973f20795d3b9bd0bb..dde927f0cf17615434cc85941e3aa79fb5fcb1e2 100644
--- a/include/simpleplugin/class_simplePlugin.inc
+++ b/include/simpleplugin/class_simplePlugin.inc
@@ -1603,6 +1603,7 @@ class simplePlugin implements SimpleTab
           msg_dialog::display('['.get_class($this).' '.strtolower($cmd).'trigger] '.$command, htmlescape($str), INFO_DIALOG);
         }
       }
+      unset($arr, $command, $returnCode);
     }
     return $messages;
   }