diff --git a/Makefile b/Makefile
index 368aff6a9..01ca4885a 100644
--- a/Makefile
+++ b/Makefile
@@ -36,7 +36,7 @@ EUNIT_OPTS = verbose
 ## emqx_trie emqx_router emqx_frame emqx_mqtt_compat
 
 CT_SUITES = emqx emqx_zone emqx_banned emqx_connection emqx_session emqx_access emqx_broker emqx_cm emqx_frame emqx_guid emqx_inflight \
-			emqx_json emqx_keepalive emqx_lib emqx_metrics emqx_misc emqx_mod emqx_mqtt_caps \
+			emqx_json emqx_keepalive emqx_lib emqx_metrics emqx_mod emqx_mqtt_caps \
 			emqx_mqtt_compat emqx_mqtt_props emqx_mqueue emqx_net emqx_pqueue emqx_router emqx_sm \
 			emqx_stats emqx_tables emqx_time emqx_topic emqx_trie emqx_vm \
 		 	emqx_mountpoint emqx_listeners emqx_protocol emqx_pool emqx_shared_sub
@@ -138,4 +138,3 @@ dep-vsn-check:
 		  {[], []} -> halt(0); \
 		  {Rebar, Mk} -> erlang:error({deps_version_discrepancy, [{rebar, Rebar}, {mk, Mk}]}) \
 		end."
-
diff --git a/src/emqx_connection.erl b/src/emqx_connection.erl
index 37665ac10..6c3d4c7e6 100644
--- a/src/emqx_connection.erl
+++ b/src/emqx_connection.erl
@@ -165,8 +165,8 @@ init_limiter({Rate, Burst}) ->
     esockd_rate_limit:new(Rate, Burst).
 
 send_fun(Transport, Socket, Peername) ->
-    fun(Serialize, Packet, Options) ->
-        Data = Serialize(Packet, Options),
+    fun(Packet, Options) ->
+        Data = emqx_frame:serialize(Packet, Options),
         try Transport:async_send(Socket, Data) of
             ok ->
                 ?LOG(debug, "SEND ~p", [iolist_to_binary(Data)], #state{peername = Peername}),
diff --git a/src/emqx_protocol.erl b/src/emqx_protocol.erl
index 3638e94e2..2c128810b 100644
--- a/src/emqx_protocol.erl
+++ b/src/emqx_protocol.erl
@@ -555,7 +555,7 @@ deliver({disconnect, _ReasonCode}, PState) ->
 -spec(send(emqx_mqtt_types:packet(), state()) -> {ok, state()} | {error, term()}).
 send(Packet = ?PACKET(Type), PState = #pstate{proto_ver = Ver, sendfun = SendFun}) ->
     trace(send, Packet, PState),
-    case SendFun(fun emqx_frame:serialize/2, Packet, #{version => Ver}) of
+    case SendFun(Packet, #{version => Ver}) of
         ok ->
             emqx_metrics:sent(Packet),
             {ok, inc_stats(send, Type, PState)};
diff --git a/src/emqx_ws_connection.erl b/src/emqx_ws_connection.erl
index 1907695af..407525601 100644
--- a/src/emqx_ws_connection.erl
+++ b/src/emqx_ws_connection.erl
@@ -144,8 +144,8 @@ websocket_init(#state{request = Req, options = Options}) ->
                 idle_timeout = IdleTimout}}.
 
 send_fun(WsPid) ->
-    fun(Serialize, Packet, Options) ->
-        Data = Serialize(Packet, Options),
+    fun(Packet, Options) ->
+        Data = emqx_frame:serialize(Packet, Options),
         BinSize = iolist_size(Data),
         emqx_metrics:inc('bytes/sent', BinSize),
         put(send_oct, get(send_oct) + BinSize),