diff --git a/rel/files/emqttd.config b/rel/files/emqttd.config
index 6a723470c..aa63385a5 100644
--- a/rel/files/emqttd.config
+++ b/rel/files/emqttd.config
@@ -108,8 +108,13 @@
     ]},
     %% Modules
     {modules, [
+        %% Client presence management module.
+        %% Publish messages when client connected or disconnected
+        {presence, []},
+
         %% Subscribe topics automatically when client connected
         {autosub, [{"$Q/client/$c", 0}]}
+
         %% Rewrite rules
         %% {rewrite, [{file, "etc/rewrite.config"}]}