diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
index d5234d88..ad4f3d5a 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
@@ -171,7 +171,7 @@ public class MpMasterService extends Service {
     @Override
     public IBinder onBind(Intent intent) {
         // TODO: Return the communication channel to the service.
-        // throw new UnsupportedOperationException("Not yet implemented");
+        throw new UnsupportedOperationException("Not yet implemented");
     }
 
     @Override