diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 2307fbf..8a7412e 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -507,7 +507,7 @@
 
     mInputWindowCommands.merge(other.mInputWindowCommands);
 
-    mContainsBuffer = other.mContainsBuffer;
+    mContainsBuffer |= other.mContainsBuffer;
     mEarlyWakeup = mEarlyWakeup || other.mEarlyWakeup;
     other.clear();
     return *this;