diff --git a/CHANGELOG.md b/CHANGELOG.md
index de6566748..c448ea0dd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ emqttd ChangeLog
 
 Bugfix: issue #189 - MQTT over WebSocket(SSL) cannot work?
 
+Bugfix: issue #193 - 'client.ack' hook should be renamed to 'message.acked', and called by emqttd_broker:foreach_hooks 
+
 
 0.9.0-alpha (2015-07-09)
 -------------------------
diff --git a/src/emqttd_session.erl b/src/emqttd_session.erl
index ff92d4f05..1a5797631 100644
--- a/src/emqttd_session.erl
+++ b/src/emqttd_session.erl
@@ -602,7 +602,7 @@ acked(PktId, Session = #session{client_id      = ClientId,
                                 awaiting_ack   = Awaiting}) ->
     case lists:keyfind(PktId, 1, InflightQ) of
         {_, Msg} ->
-            emqttd_broker:foldl_hooks('client.acked', [ClientId], Msg);
+            emqttd_broker:foreach_hooks('message.acked', [ClientId, Msg]);
         false ->
             lager:error("Session(~s) cannot find acked message: ~p", [PktId])
     end,