diff --git a/osu.Game.Benchmarks/BenchmarkMod.cs b/osu.Game.Benchmarks/BenchmarkMod.cs
index c5375e9f09..994300df36 100644
--- a/osu.Game.Benchmarks/BenchmarkMod.cs
+++ b/osu.Game.Benchmarks/BenchmarkMod.cs
@@ -9,7 +9,7 @@ namespace osu.Game.Benchmarks
 {
     public class BenchmarkMod : BenchmarkTest
     {
-        private OsuModDoubleTime mod;
+        private OsuModDoubleTime mod = null!;
 
         [Params(1, 10, 100)]
         public int Times { get; set; }
diff --git a/osu.Game.Benchmarks/BenchmarkRealmReads.cs b/osu.Game.Benchmarks/BenchmarkRealmReads.cs
index 2277f4e85c..082eb5e51b 100644
--- a/osu.Game.Benchmarks/BenchmarkRealmReads.cs
+++ b/osu.Game.Benchmarks/BenchmarkRealmReads.cs
@@ -15,9 +15,9 @@ namespace osu.Game.Benchmarks
 {
     public class BenchmarkRealmReads : BenchmarkTest
     {
-        private TemporaryNativeStorage storage;
-        private RealmAccess realm;
-        private UpdateThread updateThread;
+        private TemporaryNativeStorage storage = null!;
+        private RealmAccess realm = null!;
+        private UpdateThread updateThread = null!;
 
         [Params(1, 100, 1000)]
         public int ReadsPerFetch { get; set; }
diff --git a/osu.Game.Benchmarks/BenchmarkRuleset.cs b/osu.Game.Benchmarks/BenchmarkRuleset.cs
index 2835ec9499..7d318e043b 100644
--- a/osu.Game.Benchmarks/BenchmarkRuleset.cs
+++ b/osu.Game.Benchmarks/BenchmarkRuleset.cs
@@ -11,9 +11,9 @@ namespace osu.Game.Benchmarks
 {
     public class BenchmarkRuleset : BenchmarkTest
     {
-        private OsuRuleset ruleset;
-        private APIMod apiModDoubleTime;
-        private APIMod apiModDifficultyAdjust;
+        private OsuRuleset ruleset = null!;
+        private APIMod apiModDoubleTime = null!;
+        private APIMod apiModDifficultyAdjust = null!;
 
         public override void SetUp()
         {