diff --git a/Source/Engine/Tests/TestHistoryStack.cs b/Source/Engine/Tests/TestHistoryStack.cs
index 091b0700e..38693d1c1 100644
--- a/Source/Engine/Tests/TestHistoryStack.cs
+++ b/Source/Engine/Tests/TestHistoryStack.cs
@@ -2,7 +2,6 @@
 
 #if FLAX_TESTS
 using System;
-using FlaxEditor.History;
 using NUnit.Framework;
 using Assert = FlaxEngine.Assertions.Assert;