diff --git a/login.php b/login.php
index c98ae46..98e735a 100644
--- a/login.php
+++ b/login.php
@@ -165,7 +165,15 @@ class LoginPageDispatcher extends KTDispatcher {
         $aRegisteredLangs = $oReg->geti18nLanguages('knowledgeTree');
         $aLanguageNames = $oReg->getLanguages('knowledgeTree');
         $aRegisteredLanguageNames = array();
-        if (!empty($aRegisteredLangs))
+
+        if (empty($aRegisteredLangs))
+        {
+   	    	$query = "DELETE FROM plugin_helper";
+    	    DBUtil::runQuery($query);
+        	redirect($_SERVER['REQUEST_URI']);
+        	exit;
+        }
+        else
         {
         	foreach (array_keys($aRegisteredLangs) as $sLang)
         	{