diff --git a/services/surfaceflinger/tests/unittests/TestableScheduler.h b/services/surfaceflinger/tests/unittests/TestableScheduler.h
index 52da34b..b0b51bd 100644
--- a/services/surfaceflinger/tests/unittests/TestableScheduler.h
+++ b/services/surfaceflinger/tests/unittests/TestableScheduler.h
@@ -92,6 +92,7 @@
 private:
     void changeRefreshRate(const RefreshRate&, ConfigEvent) override {}
     void repaintEverythingForHWC() override {}
+    void kernelTimerChanged(bool /*expired*/) override {}
 };
 
 } // namespace android