diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index b240ebf..9c0c5ba 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -1125,6 +1125,7 @@
     ui::DisplayPrimaries mInternalDisplayPrimaries;
 
     sp<SetInputWindowsListener> mSetInputWindowsListener;
+    bool mPendingSyncInputWindows GUARDED_BY(mStateLock);
 };
 }; // namespace android