diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 7339b3b..1545c00 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -105,6 +105,7 @@
 class FrameTracer;
 class WindowInfosListenerInvoker;
 
+using gui::IRegionSamplingListener;
 using gui::ScreenCaptureResults;
 
 namespace frametimeline {