diff --git a/src/rooms/MSender.ts b/src/rooms/MSender.ts
index bff69f3..ce25426 100644
--- a/src/rooms/MSender.ts
+++ b/src/rooms/MSender.ts
@@ -36,7 +36,7 @@ Object.defineProperties(Room.prototype, {
      */
     sSelectHero: {
         value: function (client: Client, data?: any) {
-            client && client.send('select_hero_s2c', data);
+            this.send(client, 'select_hero_s2c', data);
         },
         writable: true
     },
@@ -56,7 +56,7 @@ Object.defineProperties(Room.prototype, {
      */
     sDrawCard: {
         value: function (client: Client, data?: any) {
-            client && client.send('draw_card_s2c', data);
+            this.send(client, 'draw_card_s2c', data);
         }
     },
     /**
@@ -108,7 +108,7 @@ Object.defineProperties(Room.prototype, {
      */
     sMsgQueue: {
         value: function (client:Client, datas?: IMsg) {
-            client && client.send("msg_queue_s2c", datas);
+            this.send(client, "msg_queue_s2c", datas);
         }
     },
     /**
@@ -151,7 +151,7 @@ Object.defineProperties(Room.prototype, {
      */
     sStealCard: {
         value: function (client: Client, data?: any) {
-            client && client.send("steal_card_s2c", data, {afterNextPatch: true});
+            this.send(client, "steal_card_s2c", data, {afterNextPatch: true});
         }
     },
     /**
@@ -161,7 +161,7 @@ Object.defineProperties(Room.prototype, {
      */
     bRemoveCard: {
         value: function (client: Client, data?: any) {
-            client && client.send("remove_card_s2c", data);
+            this.send(client, "remove_card_s2c", data);
         }
     },
     /**
@@ -213,7 +213,7 @@ Object.defineProperties(Room.prototype, {
 
     sChangeCard: {
         value: function (client: Client, data?: any) {
-            client && client.send("change_card_s2c", data);
+            this.send(client, "change_card_s2c", data);
         }
     },