diff --git a/src/com/android/browser/BrowserPreferencesPage.java b/src/com/android/browser/BrowserPreferencesPage.java
index 6e6da17..9b538e0 100644
--- a/src/com/android/browser/BrowserPreferencesPage.java
+++ b/src/com/android/browser/BrowserPreferencesPage.java
@@ -25,7 +25,10 @@
 import com.android.browser.preferences.BandwidthPreferencesFragment;
 import com.android.browser.preferences.DebugPreferencesFragment;
 
+import java.util.Arrays;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 public class BrowserPreferencesPage extends PreferenceActivity {
 
@@ -98,4 +101,16 @@
         return intent;
     }
 
+    private static final Set<String> sKnownFragments = new HashSet<String>(Arrays.asList(
+            "com.android.browser.preferences.GeneralPreferencesFragment",
+            "com.android.browser.preferences.PrivacySecurityPreferencesFragment",
+            "com.android.browser.preferences.AccessibilityPreferencesFragment",
+            "com.android.browser.preferences.AdvancedPreferencesFragment",
+            "com.android.browser.preferences.BandwidthPreferencesFragment",
+            "com.android.browser.preferences.LabPreferencesFragment"));
+
+    @Override
+    protected boolean isValidFragment(String fragmentName) {
+        return sKnownFragments.contains(fragmentName);
+    }
 }