diff --git a/app/src/main/java/org/linphone/call/CallVideoFragment.java b/app/src/main/java/org/linphone/call/CallVideoFragment.java
index e6aafbdfd..72254bb10 100644
--- a/app/src/main/java/org/linphone/call/CallVideoFragment.java
+++ b/app/src/main/java/org/linphone/call/CallVideoFragment.java
@@ -198,7 +198,7 @@ public class CallVideoFragment extends Fragment implements OnGestureListener, On
         }
 
         mGestureDetector = new GestureDetector(inCallActivity, this);
-        CompatibilityScaleGestureDetector mScaleDetector = new CompatibilityScaleGestureDetector(inCallActivity);
+        mScaleDetector = new CompatibilityScaleGestureDetector(inCallActivity);
         mScaleDetector.setOnScaleListener(this);
 
         resizePreview();