diff --git a/test/Microsoft.AspNet.WebSockets.Client.Test/KestrelWebSocketHelpers.cs b/test/Microsoft.AspNet.WebSockets.Client.Test/KestrelWebSocketHelpers.cs
index 9967c6dbf7..9ebe9e3e24 100644
--- a/test/Microsoft.AspNet.WebSockets.Client.Test/KestrelWebSocketHelpers.cs
+++ b/test/Microsoft.AspNet.WebSockets.Client.Test/KestrelWebSocketHelpers.cs
@@ -28,7 +28,7 @@ namespace Microsoft.AspNet.WebSockets.Client.Test
                     }
                     catch (Exception ex)
                     {
-                        if (ct.Response.HeadersSent)
+                        if (ct.Response.HasStarted)
                         {
                             throw;
                         }
@@ -55,4 +55,4 @@ namespace Microsoft.AspNet.WebSockets.Client.Test
             return host.Start();
         }
     }
-}
\ No newline at end of file
+}