diff --git a/app/src/main/java/com/xinyingpower/testcomm/MainActivity.java b/app/src/main/java/com/xinyingpower/testcomm/MainActivity.java
index 04a09eb..fa28804 100644
--- a/app/src/main/java/com/xinyingpower/testcomm/MainActivity.java
+++ b/app/src/main/java/com/xinyingpower/testcomm/MainActivity.java
@@ -115,7 +115,7 @@ public class MainActivity extends AppCompatActivity {
 
         int viewIds[] = {R.id.turnOn, R.id.turnOff, R.id.turnLeft, R.id.turnRight, R.id.turnUp, R.id.turnDown,
             R.id.turnOn12V, R.id.turnOn485, R.id.turnOnWipers, R.id.turnOffWipers, R.id.turnOnLight, R.id.turnOffLight,
-            R.id.setSpeed, R.id.setPreset, R.id.gotoPreset};
+            R.id.setSpeed, R.id.setPreset, R.id.gotoPreset, R.id.zoomIn, R.id.zoomOut};
         for (int viewId : viewIds) {
             Button btn = (Button)findViewById(viewId);
             btn.setOnClickListener(onButtonClicked);