diff --git a/runtime/dart_isolate.cc b/runtime/dart_isolate.cc
index de933bca67fc4..0bb3940dad01c 100644
--- a/runtime/dart_isolate.cc
+++ b/runtime/dart_isolate.cc
@@ -446,7 +446,6 @@ void DartIsolate::SetMessageHandlingTaskRunner(
   message_handling_task_runner_ = runner;
 
   message_handler().Initialize([runner](std::function<void()> task) {
-    TRACE_EVENT0("flutter", "DartIsolate::PostMessage");
     runner->PostTask([task = std::move(task)]() {
       TRACE_EVENT0("flutter", "DartIsolate::HandleMessage");
       task();