diff --git a/services/surfaceflinger/Scheduler/EventThread.cpp b/services/surfaceflinger/Scheduler/EventThread.cpp
index 57661f1..74665a7 100644
--- a/services/surfaceflinger/Scheduler/EventThread.cpp
+++ b/services/surfaceflinger/Scheduler/EventThread.cpp
@@ -525,7 +525,7 @@
 
 bool EventThread::shouldConsumeEvent(const DisplayEventReceiver::Event& event,
                                      const sp<EventThreadConnection>& connection) const {
-    const auto throttleVsync = [&] {
+    const auto throttleVsync = [&]() REQUIRES(mMutex) {
         const auto& vsyncData = event.vsync.vsyncData;
         if (connection->frameRate.isValid()) {
             return !mVsyncSchedule->getTracker()
diff --git a/services/surfaceflinger/Scheduler/EventThread.h b/services/surfaceflinger/Scheduler/EventThread.h
index 87e20a0..30869e9 100644
--- a/services/surfaceflinger/Scheduler/EventThread.h
+++ b/services/surfaceflinger/Scheduler/EventThread.h
@@ -205,7 +205,7 @@
     TracedOrdinal<int> mVsyncTracer;
     TracedOrdinal<std::chrono::nanoseconds> mWorkDuration GUARDED_BY(mMutex);
     std::chrono::nanoseconds mReadyDuration GUARDED_BY(mMutex);
-    std::shared_ptr<scheduler::VsyncSchedule> mVsyncSchedule;
+    std::shared_ptr<scheduler::VsyncSchedule> mVsyncSchedule GUARDED_BY(mMutex);
     TimePoint mLastVsyncCallbackTime GUARDED_BY(mMutex) = TimePoint::now();
     scheduler::VSyncCallbackRegistration mVsyncRegistration GUARDED_BY(mMutex);
     frametimeline::TokenManager* const mTokenManager;