diff --git a/osu.Game/IO/Serialization/Converters/SnakeCaseStringEnumConverter.cs b/osu.Game/IO/Serialization/Converters/SnakeCaseStringEnumConverter.cs
new file mode 100644
index 0000000000..1d82a5bc87
--- /dev/null
+++ b/osu.Game/IO/Serialization/Converters/SnakeCaseStringEnumConverter.cs
@@ -0,0 +1,16 @@
+// 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.
+
+using Newtonsoft.Json.Converters;
+using Newtonsoft.Json.Serialization;
+
+namespace osu.Game.IO.Serialization.Converters
+{
+    public class SnakeCaseStringEnumConverter : StringEnumConverter
+    {
+        public SnakeCaseStringEnumConverter()
+        {
+            NamingStrategy = new SnakeCaseNamingStrategy();
+        }
+    }
+}
diff --git a/osu.Game/Online/Multiplayer/Room.cs b/osu.Game/Online/Multiplayer/Room.cs
index 53ae142ad4..66e3e8975a 100644
--- a/osu.Game/Online/Multiplayer/Room.cs
+++ b/osu.Game/Online/Multiplayer/Room.cs
@@ -6,6 +6,7 @@ using System.Linq;
 using Newtonsoft.Json;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
+using osu.Game.IO.Serialization.Converters;
 using osu.Game.Online.Multiplayer.GameTypes;
 using osu.Game.Online.Multiplayer.RoomStatuses;
 using osu.Game.Users;
@@ -40,15 +41,11 @@ namespace osu.Game.Online.Multiplayer
 
         // Todo: osu-framework bug (https://github.com/ppy/osu-framework/issues/4106)
         [JsonProperty("category")]
-        private string categoryString
+        [JsonConverter(typeof(SnakeCaseStringEnumConverter))]
+        private RoomCategory category
         {
-            get => Category.Value.ToString().ToLower();
-            set
-            {
-                if (!Enum.TryParse<RoomCategory>(value, true, out var enumValue))
-                    enumValue = RoomCategory.Normal;
-                Category.Value = enumValue;
-            }
+            get => Category.Value;
+            set => Category.Value = value;
         }
 
         [Cached]