diff --git a/osu.Game.Modes.Taiko/UI/HitExplosion.cs b/osu.Game.Modes.Taiko/UI/HitExplosion.cs
index c3059ef713..3aa7977617 100644
--- a/osu.Game.Modes.Taiko/UI/HitExplosion.cs
+++ b/osu.Game.Modes.Taiko/UI/HitExplosion.cs
@@ -19,8 +19,8 @@ namespace osu.Game.Modes.Taiko.UI
     /// </summary>
     internal class HitExplosion : CircularContainer
     {
-        private TaikoJudgementInfo judgement;
-        private Box innerFill;
+        private readonly TaikoJudgementInfo judgement;
+        private readonly Box innerFill;
 
         public HitExplosion(TaikoJudgementInfo judgement)
         {
diff --git a/osu.Game.Modes.Taiko/UI/InputDrum.cs b/osu.Game.Modes.Taiko/UI/InputDrum.cs
index 580b67a03d..7582495145 100644
--- a/osu.Game.Modes.Taiko/UI/InputDrum.cs
+++ b/osu.Game.Modes.Taiko/UI/InputDrum.cs
@@ -62,10 +62,10 @@ namespace osu.Game.Modes.Taiko.UI
             /// </summary>
             public Key CentreKey;
 
-            private Sprite rim;
-            private Sprite rimHit;
-            private Sprite centre;
-            private Sprite centreHit;
+            private readonly Sprite rim;
+            private readonly Sprite rimHit;
+            private readonly Sprite centre;
+            private readonly Sprite centreHit;
 
             public TaikoHalfDrum(bool flipped)
             {
diff --git a/osu.Game.Modes.Taiko/UI/TaikoPlayfield.cs b/osu.Game.Modes.Taiko/UI/TaikoPlayfield.cs
index 0ab31606eb..c92a2ae702 100644
--- a/osu.Game.Modes.Taiko/UI/TaikoPlayfield.cs
+++ b/osu.Game.Modes.Taiko/UI/TaikoPlayfield.cs
@@ -46,16 +46,16 @@ namespace osu.Game.Modes.Taiko.UI
 
         protected override Container<Drawable> Content => hitObjectContainer;
 
-        private Container<HitExplosion> hitExplosionContainer;
+        private readonly Container<HitExplosion> hitExplosionContainer;
         //private Container<DrawableBarLine> barLineContainer;
-        private Container<JudgementText> judgementContainer;
+        private readonly Container<JudgementText> judgementContainer;
 
-        private Container hitObjectContainer;
+        private readonly Container hitObjectContainer;
         //private Container topLevelHitContainer;
-        private Container leftBackgroundContainer;
-        private Container rightBackgroundContainer;
-        private Box leftBackground;
-        private Box rightBackground;
+        private readonly Container leftBackgroundContainer;
+        private readonly Container rightBackgroundContainer;
+        private readonly Box leftBackground;
+        private readonly Box rightBackground;
 
         public TaikoPlayfield()
         {