diff --git a/test/DryIoc.IssuesTests/GHIssue399_Func_dependency_on_Singleton_resolved_under_scope_breaks_after_disposing_scope_when_WithFuncAndLazyWithoutRegistration.cs b/test/DryIoc.IssuesTests/GHIssue399_Func_dependency_on_Singleton_resolved_under_scope_breaks_after_disposing_scope_when_WithFuncAndLazyWithoutRegistration.cs
index beb8e7fb3..007c9e111 100644
--- a/test/DryIoc.IssuesTests/GHIssue399_Func_dependency_on_Singleton_resolved_under_scope_breaks_after_disposing_scope_when_WithFuncAndLazyWithoutRegistration.cs
+++ b/test/DryIoc.IssuesTests/GHIssue399_Func_dependency_on_Singleton_resolved_under_scope_breaks_after_disposing_scope_when_WithFuncAndLazyWithoutRegistration.cs
@@ -15,7 +15,7 @@ public int Run()
         [Test]
         public void Test1()
         {
-            using var container = new Container(rules => rules.WithFuncAndLazyWithoutRegistration());
+            var container = new Container(rules => rules.WithFuncAndLazyWithoutRegistration());
 
             container.Register<DepFactory>(Reuse.Singleton);
             container.Register<Dep>(Reuse.Transient);
@@ -29,6 +29,8 @@ public void Test1()
 
             var dep = factory.Create();
             Assert.IsNotNull(dep);
+
+            container.Dispose();
         }
 
         class DepFactory
@@ -47,4 +49,4 @@ public Dep Create()
 
         class Dep { }
     }
-}
\ No newline at end of file
+}