diff --git a/tumblr/README.md b/tumblr/README.md
index 70b0157b..98ff2161 100644
--- a/tumblr/README.md
+++ b/tumblr/README.md
@@ -4,9 +4,4 @@ Installation
 [Register](http://www.tumblr.com/oauth/apps) an application and use (your server name)/tumblr/callback as 
 callback URL and (your server name)/tumblr/redirect as OAuth2 redirect URL.
 
-After the registration please enter the values for "Consumer Key" and "Consumer Secret" in the [administration](admin/addons/tumblr).
-
-Notice
-------
-This connector is using the Tumblr-OAuth-Library:
-[https://groups.google.com/d/msg/tumblr-api/g6SeIBWvsnE/gnWqT9jFSlEJ](https://groups.google.com/d/msg/tumblr-api/g6SeIBWvsnE/gnWqT9jFSlEJ)
+After the registration please enter the values for "Consumer Key" and "Consumer Secret" in the [administration](admin/addons/tumblr).
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