diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index f785cae..4f274b6 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -1899,7 +1899,7 @@
         const bool tracePreComposition = mTracingEnabled && !mTracePostComposition;
         ConditionalLockGuard<std::mutex> lock(mTracingLock, tracePreComposition);
 
-        mFrameTimeline->setSfWakeUp(vsyncId, frameStart, stats.vsyncPeriod);
+        mFrameTimeline->setSfWakeUp(vsyncId, frameStart, Fps::fromPeriodNsecs(stats.vsyncPeriod));
 
         refreshNeeded = handleMessageTransaction();
         refreshNeeded |= handleMessageInvalidate();