diff --git a/apps/emqx_gateway_gbt32960/include/emqx_gbt32960.hrl b/apps/emqx_gateway_gbt32960/include/emqx_gbt32960.hrl
index ce1a3f135..ba7e7dc4a 100644
--- a/apps/emqx_gateway_gbt32960/include/emqx_gbt32960.hrl
+++ b/apps/emqx_gateway_gbt32960/include/emqx_gbt32960.hrl
@@ -4,6 +4,8 @@
 
 -record(frame, {cmd, ack, vin, encrypt, length, data, check, rawdata}).
 
+-type frame() :: #frame{}.
+
 -define(CMD(CmdType), #frame{
     cmd = CmdType,
     ack = ?ACK_IS_CMD
diff --git a/apps/emqx_gateway_gbt32960/src/emqx_gbt32960_channel.erl b/apps/emqx_gateway_gbt32960/src/emqx_gbt32960_channel.erl
index b5ac046ce..98b84a55e 100644
--- a/apps/emqx_gateway_gbt32960/src/emqx_gbt32960_channel.erl
+++ b/apps/emqx_gateway_gbt32960/src/emqx_gbt32960_channel.erl
@@ -67,7 +67,6 @@
     | {close, Reason :: atom()}.
 
 -type replies() :: reply() | [reply()].
--type frame() :: emqx_gbt32960_frame:frame().
 
 -define(TIMER_TABLE, #{
     alive_timer => keepalive,
@@ -203,7 +202,7 @@ setting_peercert_infos(Peercert, ClientInfo) ->
 %%--------------------------------------------------------------------
 %% Handle incoming packet
 %%--------------------------------------------------------------------
--spec handle_in(emqx_gbt32960_frame:frame() | {frame_error, any()}, channel()) ->
+-spec handle_in(frame() | {frame_error, any()}, channel()) ->
     {ok, channel()}
     | {ok, replies(), channel()}
     | {shutdown, Reason :: term(), channel()}