diff --git a/core/java/android/view/ViewRoot.java b/core/java/android/view/ViewRoot.java
index a6d644b..3b83044 100644
--- a/core/java/android/view/ViewRoot.java
+++ b/core/java/android/view/ViewRoot.java
@@ -898,6 +898,7 @@
                         // all at once.
                         newSurface = true;
                         fullRedrawNeeded = true;
+                        mPreviousTransparentRegion.setEmpty();
 
                         if (mGlWanted && !mUseGL) {
                             initializeGL();