diff --git a/osu.Desktop/Beatmaps/IO/LegacyFilesystemReader.cs b/osu.Desktop/Beatmaps/IO/LegacyFilesystemReader.cs
index 471f48c750..3d0869f54d 100644
--- a/osu.Desktop/Beatmaps/IO/LegacyFilesystemReader.cs
+++ b/osu.Desktop/Beatmaps/IO/LegacyFilesystemReader.cs
@@ -14,11 +14,11 @@ namespace osu.Desktop.Beatmaps.IO
     /// </summary>
     public class LegacyFilesystemReader : ArchiveReader
     {
-        static LegacyFilesystemReader()
+        public static void Register()
         {
             AddReader<LegacyFilesystemReader>((storage, path) => Directory.Exists(path));
         }
-    
+
         private string basePath { get; set; }
         private string[] beatmaps { get; set; }
         private Beatmap firstMap { get; set; }
@@ -50,10 +50,10 @@ namespace osu.Desktop.Beatmaps.IO
         {
             return firstMap.BeatmapInfo.Metadata;
         }
-        
+
         public override void Dispose()
         {
             // no-op
         }
     }
-}
\ No newline at end of file
+}
diff --git a/osu.Desktop/Program.cs b/osu.Desktop/Program.cs
index 18009417cb..29a3c71394 100644
--- a/osu.Desktop/Program.cs
+++ b/osu.Desktop/Program.cs
@@ -4,6 +4,7 @@
 using System;
 using System.IO;
 using System.Linq;
+using osu.Desktop.Beatmaps.IO;
 using osu.Framework;
 using osu.Framework.Desktop;
 using osu.Framework.Desktop.Platform;
@@ -18,6 +19,7 @@ namespace osu.Desktop
         [STAThread]
         public static int Main(string[] args)
         {
+            LegacyFilesystemReader.Register();
             using (DesktopGameHost host = Host.GetSuitableHost(@"osu", true))
             {
                 if (!host.IsPrimaryInstance)