diff --git a/Tesses.YouTubeDownloader.VFS/Class1.cs b/Tesses.YouTubeDownloader.VFS/Class1.cs
index 7601b62..512c0b4 100644
--- a/Tesses.YouTubeDownloader.VFS/Class1.cs
+++ b/Tesses.YouTubeDownloader.VFS/Class1.cs
@@ -47,7 +47,7 @@ namespace Tesses.YouTubeDownloader.VFS
             }
         }
 
-        public override IAsyncEnumerable<string> EnumerateFilesAsync(string path)
+        public override async IAsyncEnumerable<string> EnumerateFilesAsync(string path)
         {
             await foreach(var file in fs.EnumerateFilesAsync(path))
             {