diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 9cd15e8..4c2fd44 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -1004,6 +1004,7 @@
     friend class TestableSurfaceFlinger;
     friend class RefreshRateSelectionTest;
     friend class SetFrameRateTest;
+    friend class TransactionFrameTracerTest;
     friend class TransactionSurfaceFrameTest;
 
     virtual void setInitialValuesForClone(const sp<Layer>& clonedFrom);