diff --git a/packages/react-reconciler/src/ReactProfilerTimer.js b/packages/react-reconciler/src/ReactProfilerTimer.js
index 283b0e1f6a920..eaa24dc9fdc3b 100644
--- a/packages/react-reconciler/src/ReactProfilerTimer.js
+++ b/packages/react-reconciler/src/ReactProfilerTimer.js
@@ -101,7 +101,7 @@ function startProfilerTimer(fiber: Fiber): void {
   profilerStartTime = now();
 
   if (((fiber.actualStartTime: any): number) < 0) {
-    fiber.actualStartTime = now();
+    fiber.actualStartTime = profilerStartTime;
   }
 }