diff --git a/services/mogo-service-api/src/main/java/com/mogo/service/connection/IMogoOnWebSocketMessageListener.java b/services/mogo-service-api/src/main/java/com/mogo/service/connection/IMogoOnWebSocketMessageListener.java
index f87217768d..e3737d6e94 100644
--- a/services/mogo-service-api/src/main/java/com/mogo/service/connection/IMogoOnWebSocketMessageListener.java
+++ b/services/mogo-service-api/src/main/java/com/mogo/service/connection/IMogoOnWebSocketMessageListener.java
@@ -5,9 +5,13 @@ package com.mogo.service.connection;
  */
 public interface IMogoOnWebSocketMessageListener< T > {
 
-    WebSocketMsgType getDownLinkType();
+    default WebSocketMsgType getDownLinkType(){
+        return null;
+    }
 
-    WebSocketMsgType getUpLinkType();
+    default WebSocketMsgType getUpLinkType(){
+        return null;
+    }
 
     default void onMsgReceived(T obj){