diff --git a/osu.Game.Tests/Editing/Checks/CheckMutedObjectsTest.cs b/osu.Game.Tests/Editing/Checks/CheckMutedObjectsTest.cs
index 4bfe62a64d..41a8f72305 100644
--- a/osu.Game.Tests/Editing/Checks/CheckMutedObjectsTest.cs
+++ b/osu.Game.Tests/Editing/Checks/CheckMutedObjectsTest.cs
@@ -3,7 +3,6 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using System.Threading;
 using NUnit.Framework;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
@@ -11,7 +10,6 @@ using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Edit.Checks;
 using osu.Game.Rulesets.Objects;
-using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Tests.Beatmaps;
 
@@ -27,32 +25,6 @@ namespace osu.Game.Tests.Editing.Checks
         private const int volume_low = 15;
         private const int volume_muted = 5;
 
-        private sealed class MockNestableHitObject : HitObject, IHasDuration
-        {
-            private readonly IEnumerable<HitObject> toBeNested;
-
-            public MockNestableHitObject(IEnumerable<HitObject> toBeNested, double startTime, double endTime)
-            {
-                this.toBeNested = toBeNested;
-                StartTime = startTime;
-                EndTime = endTime;
-            }
-
-            protected override void CreateNestedHitObjects(CancellationToken cancellationToken)
-            {
-                foreach (var hitObject in toBeNested)
-                    AddNested(hitObject);
-            }
-
-            public double EndTime { get; }
-
-            public double Duration
-            {
-                get => EndTime - StartTime;
-                set => throw new System.NotImplementedException();
-            }
-        }
-
         [SetUp]
         public void Setup()
         {
diff --git a/osu.Game.Tests/Editing/Checks/MockNestableHitObject.cs b/osu.Game.Tests/Editing/Checks/MockNestableHitObject.cs
new file mode 100644
index 0000000000..29938839d3
--- /dev/null
+++ b/osu.Game.Tests/Editing/Checks/MockNestableHitObject.cs
@@ -0,0 +1,36 @@
+// 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.Collections.Generic;
+using System.Threading;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+
+namespace osu.Game.Tests.Editing.Checks
+{
+    public sealed class MockNestableHitObject : HitObject, IHasDuration
+    {
+        private readonly IEnumerable<HitObject> toBeNested;
+
+        public MockNestableHitObject(IEnumerable<HitObject> toBeNested, double startTime, double endTime)
+        {
+            this.toBeNested = toBeNested;
+            StartTime = startTime;
+            EndTime = endTime;
+        }
+
+        protected override void CreateNestedHitObjects(CancellationToken cancellationToken)
+        {
+            foreach (var hitObject in toBeNested)
+                AddNested(hitObject);
+        }
+
+        public double EndTime { get; }
+
+        public double Duration
+        {
+            get => EndTime - StartTime;
+            set => throw new System.NotImplementedException();
+        }
+    }
+}