diff --git a/osu.Game.Tests/Editing/Checks/CheckAudioInVideoTest.cs b/osu.Game.Tests/Editing/Checks/CheckAudioInVideoTest.cs
index 9f253527fc..9774a8ebb6 100644
--- a/osu.Game.Tests/Editing/Checks/CheckAudioInVideoTest.cs
+++ b/osu.Game.Tests/Editing/Checks/CheckAudioInVideoTest.cs
@@ -82,7 +82,7 @@ namespace osu.Game.Tests.Editing.Checks
             Assert.That(issues.Single().Template is CheckAudioInVideo.IssueTemplateMissingFile);
         }
 
-        private BeatmapVerifierContext getContext(Stream resourceStream)
+        private BeatmapVerifierContext getContext(Stream? resourceStream)
         {
             var storyboard = new Storyboard();
             var layer = storyboard.GetLayer("Video");
diff --git a/osu.Game.Tests/Editing/Checks/CheckBackgroundQualityTest.cs b/osu.Game.Tests/Editing/Checks/CheckBackgroundQualityTest.cs
index d0dffb8fad..5d3fd9cd65 100644
--- a/osu.Game.Tests/Editing/Checks/CheckBackgroundQualityTest.cs
+++ b/osu.Game.Tests/Editing/Checks/CheckBackgroundQualityTest.cs
@@ -115,7 +115,7 @@ namespace osu.Game.Tests.Editing.Checks
             stream.Verify(x => x.Close(), Times.Once());
         }
 
-        private BeatmapVerifierContext getContext(Texture background, Stream? stream = null)
+        private BeatmapVerifierContext getContext(Texture? background, Stream? stream = null)
         {
             return new BeatmapVerifierContext(beatmap, getMockWorkingBeatmap(background, stream).Object);
         }
@@ -125,7 +125,7 @@ namespace osu.Game.Tests.Editing.Checks
         /// </summary>
         /// <param name="background">The texture of the background.</param>
         /// <param name="stream">The stream representing the background file.</param>
-        private Mock<IWorkingBeatmap> getMockWorkingBeatmap(Texture background, Stream? stream = null)
+        private Mock<IWorkingBeatmap> getMockWorkingBeatmap(Texture? background, Stream? stream = null)
         {
             stream ??= new MemoryStream(new byte[1024 * 1024]);
 
diff --git a/osu.Game.Tests/Editing/Checks/CheckTooShortAudioFilesTest.cs b/osu.Game.Tests/Editing/Checks/CheckTooShortAudioFilesTest.cs
index 05856de556..4918369460 100644
--- a/osu.Game.Tests/Editing/Checks/CheckTooShortAudioFilesTest.cs
+++ b/osu.Game.Tests/Editing/Checks/CheckTooShortAudioFilesTest.cs
@@ -107,7 +107,7 @@ namespace osu.Game.Tests.Editing.Checks
             }
         }
 
-        private BeatmapVerifierContext getContext(Stream resourceStream)
+        private BeatmapVerifierContext getContext(Stream? resourceStream)
         {
             var mockWorkingBeatmap = new Mock<TestWorkingBeatmap>(beatmap, null, null);
             mockWorkingBeatmap.Setup(w => w.GetStream(It.IsAny<string>())).Returns(resourceStream);