diff --git a/overlay/FrameworksResOverlay/res/values/config.xml b/overlay/FrameworksResOverlay/res/values/config.xml
index 86a7d43..67e2483 100644
--- a/overlay/FrameworksResOverlay/res/values/config.xml
+++ b/overlay/FrameworksResOverlay/res/values/config.xml
@@ -354,4 +354,10 @@
 
     <!-- Should the pinner service pin the Home application? -->
     <bool name="config_pinnerHomeApp">true</bool>
+
+    <!-- Flag indicating whether the surfaceflinger has limited
+         alpha compositing functionality in hardware.  If set, the window
+         manager will disable alpha trasformation in animations where not
+         strictly needed. -->
+    <bool name="config_sf_limitedAlpha">true</bool>
 </resources>