diff --git a/services/surfaceflinger/RegionSamplingThread.cpp b/services/surfaceflinger/RegionSamplingThread.cpp
index 68cd84f..9d293b7 100644
--- a/services/surfaceflinger/RegionSamplingThread.cpp
+++ b/services/surfaceflinger/RegionSamplingThread.cpp
@@ -130,7 +130,7 @@
         mVsyncListening = false;
     }
 
-    void onDispSyncEvent(nsecs_t /* when */) final {
+    void onDispSyncEvent(nsecs_t /*when*/, nsecs_t /*expectedVSyncTimestamp*/) final {
         std::unique_lock<decltype(mMutex)> lock(mMutex);
 
         if (mPhaseIntervalSetting == Phase::ZERO) {