diff --git a/osu.Game/Screens/Select/FilterControl.cs b/osu.Game/Screens/Select/FilterControl.cs
index 1827eb58ca..17297c9ebf 100644
--- a/osu.Game/Screens/Select/FilterControl.cs
+++ b/osu.Game/Screens/Select/FilterControl.cs
@@ -4,6 +4,7 @@
 #nullable disable
 
 using System;
+using System.Collections.Immutable;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
@@ -64,7 +65,7 @@ namespace osu.Game.Screens.Select
                 Sort = sortMode.Value,
                 AllowConvertedBeatmaps = showConverted.Value,
                 Ruleset = ruleset.Value,
-                CollectionBeatmapMD5Hashes = collectionDropdown.Current.Value?.Collection?.PerformRead(c => c.BeatmapMD5Hashes)
+                CollectionBeatmapMD5Hashes = collectionDropdown.Current.Value?.Collection?.PerformRead(c => c.BeatmapMD5Hashes).ToImmutableHashSet()
             };
 
             if (!minimumStars.IsDefault)