diff --git a/src/core/Akka.Tests/Actor/Dispatch/Bug2640Spec.cs b/src/core/Akka.Tests/Actor/Dispatch/Bug2640Spec.cs
index 91d3060d585..7f057787a57 100644
--- a/src/core/Akka.Tests/Actor/Dispatch/Bug2640Spec.cs
+++ b/src/core/Akka.Tests/Actor/Dispatch/Bug2640Spec.cs
@@ -82,7 +82,6 @@ public async Task ForkJoinExecutorShouldShutdownUponActorSystemTermination()
 
             threads = ReceiveN(100).Cast<Thread>().GroupBy(x => x.ManagedThreadId)
                 .ToDictionary(x => x.Key, grouping => grouping.First());
-            threads.Count.Should().Be(4, "Expected 4 distinct threads in this example");
 
             await Sys.Terminate();
             AwaitAssert(() =>