diff --git a/apps/emqx_gateway/src/emqx_gateway_registry.erl b/apps/emqx_gateway/src/emqx_gateway_registry.erl
index cc46a0173..6eeb958ed 100644
--- a/apps/emqx_gateway/src/emqx_gateway_registry.erl
+++ b/apps/emqx_gateway/src/emqx_gateway_registry.erl
@@ -118,7 +118,7 @@ handle_call({unreg, Type}, _From, State = #state{reged = Gateways}) ->
         undefined ->
             {reply, ok, State};
         _ ->
-            emqx_gateway_sup:unload_gateway(Type),
+            _ = emqx_gateway_sup:unload_gateway(Type),
             {reply, ok, State#state{reged = maps:remove(Type, Gateways)}}
     end;
 
diff --git a/apps/emqx_gateway/src/emqx_gateway_sup.erl b/apps/emqx_gateway/src/emqx_gateway_sup.erl
index 4f340913e..b925d420e 100644
--- a/apps/emqx_gateway/src/emqx_gateway_sup.erl
+++ b/apps/emqx_gateway/src/emqx_gateway_sup.erl
@@ -71,7 +71,7 @@ lookup_gateway(GwType) ->
             undefined
     end.
 
--spec update_gateway(gateway_type())
+-spec update_gateway(gateway())
     -> ok
      | {error, any()}.
 update_gateway(NewGateway = #{type := GwType}) ->