diff --git a/frontend/public/index.html b/frontend/public/index.html
index db8df0318..f3f7e840f 100644
--- a/frontend/public/index.html
+++ b/frontend/public/index.html
@@ -23,6 +23,8 @@
   <meta name="keywords" lang="de" content="Grundeinkommen, aktives, Wallet, tauschen, schenken, Geldsystem, alternativ, Vergänglichkeit">
   <meta name="keywords" lang="en" content="Basic income, active, wallet, exchange, gift, monetary system, alternative, decay">
   <meta name="author" content="Bernd Hückstädt - Gradido-Akademie">
+  <meta name="url" content="http://www.gdd.gradido.net">
+  <meta name="identifier-URL" content="http://www.gradido.net">
   <meta charset="utf-8">
   <meta name="robots" content="noindex,nofollow">