diff --git a/core/java/android/content/res/CompatibilityInfo.java b/core/java/android/content/res/CompatibilityInfo.java
index d0ba590159f43..c33c4d688ccd5 100644
--- a/core/java/android/content/res/CompatibilityInfo.java
+++ b/core/java/android/content/res/CompatibilityInfo.java
@@ -140,10 +140,16 @@ public class CompatibilityInfo {
         appFlags = appInfo.flags;
         
         if ((appInfo.flags & ApplicationInfo.FLAG_SUPPORTS_LARGE_SCREENS) != 0) {
-            mCompatibilityFlags |= LARGE_SCREENS | CONFIGURED_LARGE_SCREENS;
+            // Saying you support large screens also implies you support xlarge
+            // screens; there is no compatibility mode for a large app on an
+            // xlarge screen.
+            mCompatibilityFlags |= LARGE_SCREENS | CONFIGURED_LARGE_SCREENS
+                    | XLARGE_SCREENS | CONFIGURED_XLARGE_SCREENS
+                    | EXPANDABLE | CONFIGURED_EXPANDABLE;
         }
         if ((appInfo.flags & ApplicationInfo.FLAG_SUPPORTS_XLARGE_SCREENS) != 0) {
-            mCompatibilityFlags |= XLARGE_SCREENS | CONFIGURED_XLARGE_SCREENS;
+            mCompatibilityFlags |= XLARGE_SCREENS | CONFIGURED_XLARGE_SCREENS
+                    | EXPANDABLE | CONFIGURED_EXPANDABLE;
         }
         if ((appInfo.flags & ApplicationInfo.FLAG_RESIZEABLE_FOR_SCREENS) != 0) {
             mCompatibilityFlags |= EXPANDABLE | CONFIGURED_EXPANDABLE;