diff --git a/src/com/android/browser/BaseUi.java b/src/com/android/browser/BaseUi.java
index 69063eb..e1d7047 100644
--- a/src/com/android/browser/BaseUi.java
+++ b/src/com/android/browser/BaseUi.java
@@ -236,6 +236,7 @@
 
     @Override
     public void setActiveTab(final Tab tab) {
+        if (tab == null) return;
         mHandler.removeMessages(MSG_HIDE_TITLEBAR);
         if ((tab != mActiveTab) && (mActiveTab != null)) {
             removeTabFromContentView(mActiveTab);