diff --git a/modules/catkin_ws/src/VeloxProtocolLib/include/VeloxProtocolLib/Connection.h b/modules/catkin_ws/src/VeloxProtocolLib/include/VeloxProtocolLib/Connection.h
index bea57818a63546afa50bddfab1586cfdb60456a0..23302518acd9074fd79245865a782c2445056907 100644
--- a/modules/catkin_ws/src/VeloxProtocolLib/include/VeloxProtocolLib/Connection.h
+++ b/modules/catkin_ws/src/VeloxProtocolLib/include/VeloxProtocolLib/Connection.h
@@ -81,8 +81,8 @@ private:
     networking::Networking & net;
     boost::asio::serial_port port;
 
-    Callback onUpdatedCallback;
-    Callback onClosedCallback;
+    Callback onUpdatedCallback{DEFAULT_CALLBACK};
+    Callback onClosedCallback{DEFAULT_CALLBACK};
 
     networking::time::Timer::Ptr transmitUpdateTimer;
     networking::time::Timer::Ptr transmitHeartbeatTimer;