diff --git a/osu.Game.Benchmarks/BenchmarkDifficultyCalculation.cs b/osu.Game.Benchmarks/BenchmarkDifficultyCalculation.cs
index ebd70a7e91..39eb5b78da 100644
--- a/osu.Game.Benchmarks/BenchmarkDifficultyCalculation.cs
+++ b/osu.Game.Benchmarks/BenchmarkDifficultyCalculation.cs
@@ -1,4 +1,7 @@
-using System.IO;
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.IO;
 using BenchmarkDotNet.Attributes;
 using osu.Framework.IO.Stores;
 using osu.Game.Beatmaps;
diff --git a/osu.Game.Rulesets.Osu.Tests/OsuDifficultyCalculatorTest.cs b/osu.Game.Rulesets.Osu.Tests/OsuDifficultyCalculatorTest.cs
index d98c406a53..760374b5a2 100644
--- a/osu.Game.Rulesets.Osu.Tests/OsuDifficultyCalculatorTest.cs
+++ b/osu.Game.Rulesets.Osu.Tests/OsuDifficultyCalculatorTest.cs
@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System.Linq;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Difficulty;