diff --git a/osu.Game/Rulesets/Edit/Checks/CheckDelayedHitsounds.cs b/osu.Game/Rulesets/Edit/Checks/CheckDelayedHitsounds.cs
index 0591ad866d..6afc8d7a5d 100644
--- a/osu.Game/Rulesets/Edit/Checks/CheckDelayedHitsounds.cs
+++ b/osu.Game/Rulesets/Edit/Checks/CheckDelayedHitsounds.cs
@@ -45,7 +45,7 @@ namespace osu.Game.Rulesets.Edit.Checks
 
             foreach (var file in beatmapSet.Files)
             {
-                using (Stream stream = context.WorkingBeatmap.GetStream(file.File.GetStoragePath()))
+                using (Stream? stream = context.WorkingBeatmap.GetStream(file.File.GetStoragePath()))
                 {
                     if (stream == null)
                         continue;