diff --git a/Tests/Engine/DataFeeds/SubscriptionUtilsTests.cs b/Tests/Engine/DataFeeds/SubscriptionUtilsTests.cs
index 2c9599f1d109..3ede2b43981f 100644
--- a/Tests/Engine/DataFeeds/SubscriptionUtilsTests.cs
+++ b/Tests/Engine/DataFeeds/SubscriptionUtilsTests.cs
@@ -32,7 +32,7 @@
 
 namespace QuantConnect.Tests.Engine.DataFeeds
 {
-    [TestFixture, Parallelizable(ParallelScope.All)]
+    [TestFixture, Parallelizable(ParallelScope.Fixtures)]
     public class SubscriptionUtilsTests
     {
         private Security _security;