diff --git a/modules/structs/WebClient.go b/modules/structs/WebClient.go
index e5effc4..3df3773 100644
--- a/modules/structs/WebClient.go
+++ b/modules/structs/WebClient.go
@@ -45,6 +45,12 @@ func (webClient *WebClient) SendBinaryMessage(conn *websocket.Conn, msg []byte)
 	if conn == webClient.MobileConn {
 		webClient.mobileConnMu.Lock()
 		defer webClient.mobileConnMu.Unlock()
+
+		if conn == nil {
+			logger.WebMobile.Warnln("err conn nil SendBinaryMessage")
+			return errors.New("conn nil")
+		}
+
 		err = conn.WriteMessage(websocket.BinaryMessage, msg)
 
 		if err != nil {
@@ -56,6 +62,11 @@ func (webClient *WebClient) SendBinaryMessage(conn *websocket.Conn, msg []byte)
 	webClient.voiceConnMu.Lock()
 	defer webClient.voiceConnMu.Unlock()
 
+	if conn == nil {
+		logger.WebVoice.Warnln("err conn nil SendBinaryMessage")
+		return errors.New("conn nil")
+	}
+
 	err = conn.WriteMessage(websocket.BinaryMessage, msg)
 
 	if err != nil {