diff --git a/Friendica-API.md b/Friendica-API.md
index fc81498..3cd78d2 100644
--- a/Friendica-API.md
+++ b/Friendica-API.md
@@ -16,7 +16,13 @@ Please refer to the linked documentation for further information.
 * include_my_retweet: Retweets in friendica are implemented in a different way
 
 #### Different behaviour
-* screen_name: The nick name is not unique. This means that use of this parameter is a problem.
+* screen_name: The nick name in friendica is not unique. The contacts are searched by the following priority:
+** Friendica
+** StatusNet/GNU Social
+** Diaspora
+** pump.io
+** Twitter
+** everything else
 
 ### account/verify_credentials
 #### Parameters