diff --git a/wshandler/wshandler.go b/wshandler/wshandler.go
index d06d72a..b26a10a 100644
--- a/wshandler/wshandler.go
+++ b/wshandler/wshandler.go
@@ -356,7 +356,6 @@ func (sh *subhandler) mainLoop(ctx context.Context) {
 	}()
 
 	entireConns := make(map[string]*wsconn)
-	entireAlias := make(map[string]*wsconn)
 	rooms := make(map[string]*room)
 	roomDestroyChan := make(chan string, 1000)
 	findRoom := func(name string, create bool) *room {
@@ -371,7 +370,6 @@ func (sh *subhandler) mainLoop(ctx context.Context) {
 	}
 
 	defer func() {
-		entireAlias = nil
 		for _, conn := range entireConns {
 			var roomnames []string
 			for _, room := range conn.joinedRooms {
@@ -383,10 +381,10 @@ func (sh *subhandler) mainLoop(ctx context.Context) {
 	}()
 
 	errProcessFailed_NotInRoom := errors.New("not in room")
-	processPrivateUpstreamMessage := func(usermsg *UpstreamMessage) (bool, error) {
+	processPrivateUpstreamMessage := func(usermsg *UpstreamMessage) bool {
 		target := usermsg.Target
 		if target[0] == '#' {
-			return false, nil
+			return false
 		}
 		roomindex := strings.IndexByte(target, '@')
 		var accid string
@@ -398,20 +396,14 @@ func (sh *subhandler) mainLoop(ctx context.Context) {
 			accid = target
 		}
 
-		var conn *wsconn
-		if accid[0] == '@' {
-			conn = entireAlias[accid[1:]]
-		} else {
-			conn = entireConns[accid]
-		}
-
+		conn := entireConns[accid]
 		if conn == nil {
-			return false, nil
+			return false
 		}
 
 		if len(roomid) > 0 {
 			if !conn.isInRoom(roomid) {
-				return false, errProcessFailed_NotInRoom
+				return false
 			}
 		}
 
@@ -427,7 +419,7 @@ func (sh *subhandler) mainLoop(ctx context.Context) {
 			msg: ds,
 		}
 
-		return true, nil
+		return true
 	}
 	errCommandArgumentNotCorrect := errors.New("command arguments are not correct")
 	processCommandMessage := func(usermsg *commandMessage) (bool, error) {
@@ -486,21 +478,17 @@ func (sh *subhandler) mainLoop(ctx context.Context) {
 			// 없으면 publish한다.
 			switch usermsg := usermsg.(type) {
 			case *UpstreamMessage:
-				processed, err := processPrivateUpstreamMessage(usermsg)
-				if err != nil {
-					logger.Println("processUpstreamMessage returns err :", err)
-				}
-
-				if !processed {
+				if !processPrivateUpstreamMessage(usermsg) {
 					// private메시지가 처리가 안됐으므로 publish
 					enc := gob.NewEncoder(buffer)
+					var err error
 					if err = enc.Encode(usermsg); err == nil {
 						_, err = sh.redisSync.Publish(context.Background(), sh.redisMsgChanName, buffer.Bytes()).Result()
 					}
-				}
 
-				if err != nil {
-					logger.Println("gob.Encode or publish failed :", err)
+					if err != nil {
+						logger.Println("gob.Encode or publish failed :", err)
+					}
 				}
 
 			case *commandMessage:
@@ -532,8 +520,8 @@ func (sh *subhandler) mainLoop(ctx context.Context) {
 					if room := findRoom(roomName, false); room != nil {
 						room.broadcast(usermsg)
 					}
-				} else if _, err := processPrivateUpstreamMessage(usermsg); err != nil {
-					logger.Println("processPrivateUpstreamMessage returns err :", err)
+				} else {
+					processPrivateUpstreamMessage(usermsg)
 				}
 
 			case *commandMessage:
@@ -550,7 +538,6 @@ func (sh *subhandler) mainLoop(ctx context.Context) {
 		case c := <-sh.connInOutChan:
 			if c.Conn == nil {
 				delete(entireConns, c.sender.Accid.Hex())
-				delete(entireAlias, c.sender.Alias)
 				var roomnames []string
 				for _, room := range c.joinedRooms {
 					roomnames = append(roomnames, room.name)
@@ -562,7 +549,6 @@ func (sh *subhandler) mainLoop(ctx context.Context) {
 				go sh.callReceiver.OnClientMessageReceived(c.sender, Disconnected, bytes.NewBuffer(bt))
 			} else {
 				entireConns[c.sender.Accid.Hex()] = c
-				entireAlias[c.sender.Alias] = c
 				go sh.callReceiver.OnClientMessageReceived(c.sender, Connected, nil)
 			}
 		}