diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index f50f9e7..65e0cbf 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -529,6 +529,7 @@
 #ifdef USE_HWC2
     bool mPropagateBackpressure = true;
 #endif
+    bool mUseHwcVirtualDisplays = true;
 
     // these are thread safe
     mutable MessageQueue mEventQueue;