diff --git a/osu.Game.Rulesets.Osu/Statistics/AccuracyHeatmap.cs b/osu.Game.Rulesets.Osu/Statistics/AccuracyHeatmap.cs
index 0249b6d9b1..495fccf03a 100644
--- a/osu.Game.Rulesets.Osu/Statistics/AccuracyHeatmap.cs
+++ b/osu.Game.Rulesets.Osu/Statistics/AccuracyHeatmap.cs
@@ -1,8 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System;
 using System.Diagnostics;
 using System.Linq;
@@ -36,8 +34,8 @@ namespace osu.Game.Rulesets.Osu.Statistics
 
         private const float rotation = 45;
 
-        private BufferedContainer bufferedGrid;
-        private GridContainer pointGrid;
+        private BufferedContainer bufferedGrid = null!;
+        private GridContainer pointGrid = null!;
 
         private readonly ScoreInfo score;
         private readonly IBeatmap playableBeatmap;