diff --git a/osu.Game.Rulesets.Catch.Tests/Editor/Checks/CheckCatchAbnormalDifficultySettingsTest.cs b/osu.Game.Rulesets.Catch.Tests/Editor/Checks/CheckCatchAbnormalDifficultySettingsTest.cs
index 2ae2e20215..33aa4cba5d 100644
--- a/osu.Game.Rulesets.Catch.Tests/Editor/Checks/CheckCatchAbnormalDifficultySettingsTest.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/Checks/CheckCatchAbnormalDifficultySettingsTest.cs
@@ -17,7 +17,7 @@ namespace osu.Game.Rulesets.Catch.Tests.Editor.Checks
     {
         private CheckCatchAbnormalDifficultySettings check = null!;
 
-        private IBeatmap beatmap = new Beatmap<HitObject>();
+        private readonly IBeatmap beatmap = new Beatmap<HitObject>();
 
         [SetUp]
         public void Setup()
@@ -25,7 +25,7 @@ namespace osu.Game.Rulesets.Catch.Tests.Editor.Checks
             check = new CheckCatchAbnormalDifficultySettings();
 
             beatmap.BeatmapInfo.Ruleset = new CatchRuleset().RulesetInfo;
-            beatmap.Difficulty = new BeatmapDifficulty()
+            beatmap.Difficulty = new BeatmapDifficulty
             {
                 ApproachRate = 5,
                 CircleSize = 5,
diff --git a/osu.Game.Rulesets.Mania.Tests/Editor/Checks/CheckKeyCountTest.cs b/osu.Game.Rulesets.Mania.Tests/Editor/Checks/CheckKeyCountTest.cs
index 564c611548..b40a62176c 100644
--- a/osu.Game.Rulesets.Mania.Tests/Editor/Checks/CheckKeyCountTest.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Editor/Checks/CheckKeyCountTest.cs
@@ -23,7 +23,7 @@ namespace osu.Game.Rulesets.Mania.Tests.Editor.Checks
         {
             check = new CheckKeyCount();
 
-            beatmap = new Beatmap<HitObject>()
+            beatmap = new Beatmap<HitObject>
             {
                 BeatmapInfo = new BeatmapInfo
                 {
diff --git a/osu.Game.Rulesets.Mania.Tests/Editor/Checks/CheckManiaAbnormalDifficultySettingsTest.cs b/osu.Game.Rulesets.Mania.Tests/Editor/Checks/CheckManiaAbnormalDifficultySettingsTest.cs
index 6c585aace3..da5ab037e5 100644
--- a/osu.Game.Rulesets.Mania.Tests/Editor/Checks/CheckManiaAbnormalDifficultySettingsTest.cs
+++ b/osu.Game.Rulesets.Mania.Tests/Editor/Checks/CheckManiaAbnormalDifficultySettingsTest.cs
@@ -17,7 +17,7 @@ namespace osu.Game.Rulesets.Mania.Tests.Editor.Checks
     {
         private CheckManiaAbnormalDifficultySettings check = null!;
 
-        private IBeatmap beatmap = new Beatmap<HitObject>();
+        private readonly IBeatmap beatmap = new Beatmap<HitObject>();
 
         [SetUp]
         public void Setup()
@@ -25,7 +25,7 @@ namespace osu.Game.Rulesets.Mania.Tests.Editor.Checks
             check = new CheckManiaAbnormalDifficultySettings();
 
             beatmap.BeatmapInfo.Ruleset = new ManiaRuleset().RulesetInfo;
-            beatmap.Difficulty = new BeatmapDifficulty()
+            beatmap.Difficulty = new BeatmapDifficulty
             {
                 OverallDifficulty = 5,
                 DrainRate = 5,
diff --git a/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckOsuAbnormalDifficultySettingsTest.cs b/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckOsuAbnormalDifficultySettingsTest.cs
index 53ccd3c7a7..5f49714d93 100644
--- a/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckOsuAbnormalDifficultySettingsTest.cs
+++ b/osu.Game.Rulesets.Osu.Tests/Editor/Checks/CheckOsuAbnormalDifficultySettingsTest.cs
@@ -17,14 +17,14 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor.Checks
     {
         private CheckOsuAbnormalDifficultySettings check = null!;
 
-        private IBeatmap beatmap = new Beatmap<HitObject>();
+        private readonly IBeatmap beatmap = new Beatmap<HitObject>();
 
         [SetUp]
         public void Setup()
         {
             check = new CheckOsuAbnormalDifficultySettings();
 
-            beatmap.Difficulty = new BeatmapDifficulty()
+            beatmap.Difficulty = new BeatmapDifficulty
             {
                 ApproachRate = 5,
                 CircleSize = 5,
diff --git a/osu.Game.Rulesets.Osu/Edit/Checks/CheckOsuAbnormalDifficultySettings.cs b/osu.Game.Rulesets.Osu/Edit/Checks/CheckOsuAbnormalDifficultySettings.cs
index c1eca7fff7..7ad861f317 100644
--- a/osu.Game.Rulesets.Osu/Edit/Checks/CheckOsuAbnormalDifficultySettings.cs
+++ b/osu.Game.Rulesets.Osu/Edit/Checks/CheckOsuAbnormalDifficultySettings.cs
@@ -11,6 +11,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Checks
     public class CheckOsuAbnormalDifficultySettings : CheckAbnormalDifficultySettings
     {
         public override CheckMetadata Metadata => new CheckMetadata(CheckCategory.Settings, "Checks osu relevant settings");
+
         public override IEnumerable<Issue> Run(BeatmapVerifierContext context)
         {
             var diff = context.Beatmap.Difficulty;
diff --git a/osu.Game.Rulesets.Taiko.Tests/Editor/Checks/CheckTaikoAbnormalDifficultySettingsTest.cs b/osu.Game.Rulesets.Taiko.Tests/Editor/Checks/CheckTaikoAbnormalDifficultySettingsTest.cs
index f10e62f3bf..4a6cf0313a 100644
--- a/osu.Game.Rulesets.Taiko.Tests/Editor/Checks/CheckTaikoAbnormalDifficultySettingsTest.cs
+++ b/osu.Game.Rulesets.Taiko.Tests/Editor/Checks/CheckTaikoAbnormalDifficultySettingsTest.cs
@@ -17,7 +17,7 @@ namespace osu.Game.Rulesets.Taiko.Tests.Editor.Checks
     {
         private CheckTaikoAbnormalDifficultySettings check = null!;
 
-        private IBeatmap beatmap = new Beatmap<HitObject>();
+        private readonly IBeatmap beatmap = new Beatmap<HitObject>();
 
         [SetUp]
         public void Setup()
@@ -25,7 +25,7 @@ namespace osu.Game.Rulesets.Taiko.Tests.Editor.Checks
             check = new CheckTaikoAbnormalDifficultySettings();
 
             beatmap.BeatmapInfo.Ruleset = new TaikoRuleset().RulesetInfo;
-            beatmap.Difficulty = new BeatmapDifficulty()
+            beatmap.Difficulty = new BeatmapDifficulty
             {
                 OverallDifficulty = 5,
             };