diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 81f569a..7a9c30f 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -364,6 +364,7 @@
     // For unit tests
     friend class TestableSurfaceFlinger;
     friend class TransactionApplicationTest;
+    friend class TunnelModeEnabledReporterTest;
 
     using RefreshRate = scheduler::RefreshRateConfigs::RefreshRate;
     using VsyncModulator = scheduler::VsyncModulator;