1 files changed, 1 insertions, 0 deletions
diff --git a/main/src/cgeo/geocaching/maps/google/GoogleOverlay.java b/main/src/cgeo/geocaching/maps/google/GoogleOverlay.java
index e937773..0a5cf69 100644
--- a/main/src/cgeo/geocaching/maps/google/GoogleOverlay.java
+++ b/main/src/cgeo/geocaching/maps/google/GoogleOverlay.java
@@ -28,6 +28,7 @@ public class GoogleOverlay extends Overlay implements OverlayImpl {
         super.draw(canvas, mapView, shadow);
 
         if (overlayBase != null) {
+            assert mapView instanceof MapViewImpl;
             overlayBase.draw(canvas, (MapViewImpl) mapView, shadow);
         }
     }