diff --git a/src/Workleap.ComponentModel.DataAnnotations.Tests/MaxTimeSpanValueAttributeTests.cs b/src/Workleap.ComponentModel.DataAnnotations.Tests/MaxTimeSpanValueAttributeTests.cs
index d31e7f6..86ba51d 100644
--- a/src/Workleap.ComponentModel.DataAnnotations.Tests/MaxTimeSpanValueAttributeTests.cs
+++ b/src/Workleap.ComponentModel.DataAnnotations.Tests/MaxTimeSpanValueAttributeTests.cs
@@ -1,5 +1,3 @@
-using System;
-
 namespace Workleap.ComponentModel.DataAnnotations.Tests;
 
 public class MaxTimeSpanValueAttributeTests
diff --git a/src/Workleap.ComponentModel.DataAnnotations.Tests/MinTimeSpanValueAttributeTests.cs b/src/Workleap.ComponentModel.DataAnnotations.Tests/MinTimeSpanValueAttributeTests.cs
index e1018be..9f41a1f 100644
--- a/src/Workleap.ComponentModel.DataAnnotations.Tests/MinTimeSpanValueAttributeTests.cs
+++ b/src/Workleap.ComponentModel.DataAnnotations.Tests/MinTimeSpanValueAttributeTests.cs
@@ -1,5 +1,3 @@
-using System;
-
 namespace Workleap.ComponentModel.DataAnnotations.Tests;
 
 public class MinTimeSpanValueAttributeTests