diff --git a/test/Kestrel.FunctionalTests/RequestBodyTimeoutTests.cs b/test/Kestrel.FunctionalTests/RequestBodyTimeoutTests.cs
index a9593afe79..44c7366067 100644
--- a/test/Kestrel.FunctionalTests/RequestBodyTimeoutTests.cs
+++ b/test/Kestrel.FunctionalTests/RequestBodyTimeoutTests.cs
@@ -163,9 +163,9 @@ namespace Microsoft.AspNetCore.Server.Kestrel.FunctionalTests
                         "",
                         "");
 
-                    Assert.True(appRunningEvent.Wait(TimeSpan.FromSeconds(10)));
+                    Assert.True(appRunningEvent.Wait(TimeSpan.FromSeconds(10)), "AppRunningEvent timed out.");
                     systemClock.UtcNow += gracePeriod + TimeSpan.FromSeconds(1);
-                    Assert.True(exceptionSwallowedEvent.Wait(TimeSpan.FromSeconds(10)));
+                    Assert.True(exceptionSwallowedEvent.Wait(TimeSpan.FromSeconds(10)), "ExceptionSwallowedEvent timed out.");
 
                     await connection.Receive(
                         "HTTP/1.1 200 OK",