diff --git a/samples/ApiDemos/src/com/example/android/apis/app/PresentationActivity.java b/samples/ApiDemos/src/com/example/android/apis/app/PresentationActivity.java
index 48ffc444f..b08efacbe 100644
--- a/samples/ApiDemos/src/com/example/android/apis/app/PresentationActivity.java
+++ b/samples/ApiDemos/src/com/example/android/apis/app/PresentationActivity.java
@@ -395,6 +395,7 @@ public class PresentationActivity extends Activity
             cb.setTag(display);
             cb.setOnCheckedChangeListener(PresentationActivity.this);
             cb.setChecked(contents != null);
+            cb.setEnabled((display.getFlags() & Display.FLAG_PRESENTATION) != 0);
 
             TextView tv = (TextView)v.findViewById(R.id.display_id);
             tv.setText(v.getContext().getResources().getString(