diff --git a/samples/ApiDemos/src/com/example/android/apis/animation/Transition3d.java b/samples/ApiDemos/src/com/example/android/apis/animation/Transition3d.java
index 38e69d031..a52b01ba3 100644
--- a/samples/ApiDemos/src/com/example/android/apis/animation/Transition3d.java
+++ b/samples/ApiDemos/src/com/example/android/apis/animation/Transition3d.java
@@ -101,7 +101,7 @@ public class Transition3d extends Activity implements
         mContainer.startAnimation(rotation);
     }
 
-    public void onItemClick(AdapterView parent, View v, int position, long id) {
+    public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
         // Pre-load the image then start the animation
         mImageView.setImageResource(PHOTOS_RESOURCES[position]);
         applyRotation(position, 0, 90);