diff --git a/src/com/android/browser/PhoneUi.java b/src/com/android/browser/PhoneUi.java
index f94a8ab..d7f84b5 100644
--- a/src/com/android/browser/PhoneUi.java
+++ b/src/com/android/browser/PhoneUi.java
@@ -312,6 +312,7 @@
     }
 
     void hideNavScreen(boolean animate) {
+        if (mNavScreen == null) return;
         Tab tab = mNavScreen.getSelectedTab();
         mCustomViewContainer.removeView(mNavScreen);
         mNavScreen = null;