diff --git a/src/emqttd_cm.erl b/src/emqttd_cm.erl
index 04902c9ab..d60ddc78d 100644
--- a/src/emqttd_cm.erl
+++ b/src/emqttd_cm.erl
@@ -30,22 +30,22 @@
 
 -include("emqttd.hrl").
 
--behaviour(gen_server2).
-
--define(SERVER, ?MODULE).
-
 %% API Exports 
 -export([start_link/2, pool/0]).
 
 -export([lookup/1, register/1, unregister/1]).
 
+-behaviour(gen_server2).
+
+-define(SERVER, ?MODULE).
+
 %% gen_server Function Exports
 -export([init/1, handle_call/3, handle_cast/2, handle_info/2,
          terminate/2, code_change/3]).
 
 -record(state, {id, statsfun}).
 
--define(CM_POOL, cm_pool).
+-define(CM_POOL, ?MODULE).
 
 %%%=============================================================================
 %%% API