diff --git a/src/transport/efka_client.erl b/src/transport/efka_client.erl
index 9eb00a4..165d1cb 100644
--- a/src/transport/efka_client.erl
+++ b/src/transport/efka_client.erl
@@ -234,6 +234,7 @@ handle_event(internal, {decoded_reply, ReplyFrame}, StateName, State) ->
 handle_event(internal, {decoded_cast, #'CastFrame'{body = {command, #'CastFrame.Command'{command = {auth, #'CastFrame.Command.Authorization'{cmd = Cmd}}}}}},
     StateName, State = #state{socket = Socket, next_packet_id = PacketId}) ->
 
+    logger:debug("[efka_client] auth cmd: ~p", [Cmd]),
     case {Cmd, StateName} of
         {'ACTIVATE', ?STATE_ACTIVATED} ->
             {keep_state, State};