diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 4cfbddd..7744365 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -1281,6 +1281,8 @@
     // janky frames there are.
     nsecs_t mMissedFrameJankStart = 0;
     int32_t mMissedFrameJankCount = 0;
+    // Positive if jank should be uploaded in postComposition
+    nsecs_t mLastJankDuration = -1;
 
     int mFrameRateFlexibilityTokenCount = 0;