diff --git a/osu.Game.Modes.Taiko/Objects/Drawable/DrawableTaikoHitObject.cs b/osu.Game.Modes.Taiko/Objects/Drawable/DrawableTaikoHitObject.cs
index 01a6bc0044..831246fd03 100644
--- a/osu.Game.Modes.Taiko/Objects/Drawable/DrawableTaikoHitObject.cs
+++ b/osu.Game.Modes.Taiko/Objects/Drawable/DrawableTaikoHitObject.cs
@@ -4,6 +4,7 @@
 using osu.Framework.Graphics;
 using osu.Game.Modes.Objects.Drawables;
 using osu.Game.Modes.Taiko.Judgements;
+using osu.Game.Modes.Taiko.Objects.Drawable.Pieces;
 
 namespace osu.Game.Modes.Taiko.Objects.Drawable
 {
diff --git a/osu.Game.Modes.Taiko/Objects/Drawable/Pieces/CirclePiece.cs b/osu.Game.Modes.Taiko/Objects/Drawable/Pieces/CirclePiece.cs
index 20971cb84d..bf81b796ef 100644
--- a/osu.Game.Modes.Taiko/Objects/Drawable/Pieces/CirclePiece.cs
+++ b/osu.Game.Modes.Taiko/Objects/Drawable/Pieces/CirclePiece.cs
@@ -46,11 +46,11 @@ namespace osu.Game.Modes.Taiko.Objects.Drawable.Pieces
 
         public override Vector2 Size => new Vector2(base.Size.X, 128);
 
-        private Container innerLayer;
-        private Container backingGlowContainer;
-        private Container innerCircleContainer;
-        private Box innerBackground;
-        private Triangles triangles;
+        private readonly Container innerLayer;
+        private readonly Container backingGlowContainer;
+        private readonly Container innerCircleContainer;
+        private readonly Box innerBackground;
+        private readonly Triangles triangles;
 
         protected CirclePiece()
         {