diff --git a/autobahn/wamp/protocol.py b/autobahn/wamp/protocol.py
index 6f8d8d48..2fb224bf 100644
--- a/autobahn/wamp/protocol.py
+++ b/autobahn/wamp/protocol.py
@@ -587,7 +587,7 @@ class ApplicationSession(BaseSession):
                         invoke_kwargs = msg.kwargs if msg.kwargs else dict()
 
                         if handler.details_arg:
-                            invoke_kwargs[handler.details_arg] = types.EventDetails(publication=msg.publication, publisher=msg.publisher, publisher_authid=msg.publisher_authid, publisher_authrole=msg.publisher_authrole, topic=topic, enc_algo=msg.enc_algo)
+                            invoke_kwargs[handler.details_arg] = types.EventDetails(publication=msg.publication, publisher=msg.publisher, publisher_authid=msg.publisher_authid, publisher_authrole=msg.publisher_authrole, topic=topic, retained=msg.retained, enc_algo=msg.enc_algo)
 
                         def _error(e):
                             errmsg = 'While firing {0} subscribed under {1}.'.format(