diff --git a/src/Middleware/CORS/test/FunctionalTests/CorsMiddlewareFunctionalTest.cs b/src/Middleware/CORS/test/FunctionalTests/CorsMiddlewareFunctionalTest.cs
index 355dd0c658ca..717f67a07fbc 100644
--- a/src/Middleware/CORS/test/FunctionalTests/CorsMiddlewareFunctionalTest.cs
+++ b/src/Middleware/CORS/test/FunctionalTests/CorsMiddlewareFunctionalTest.cs
@@ -14,6 +14,8 @@
 using Xunit;
 using Xunit.Abstractions;
 
+[assembly: CollectionBehavior(CollectionBehavior.CollectionPerAssembly)]
+
 namespace FunctionalTests
 {
     public class CorsMiddlewareFunctionalTests : LoggedTest