diff --git a/Util/SongDownloader.cs b/Util/SongDownloader.cs
index 7b87ca3..dda05a7 100644
--- a/Util/SongDownloader.cs
+++ b/Util/SongDownloader.cs
@@ -47,7 +47,7 @@ static unsafe void ExtractZip(Stream zipStream, string basePath, CancellationTok
 
 			int steps;
 			var progress = 0;
-			var files = new Dictionary<string, (IntPtr ptr, UnmanagedMemoryStream stream)>();
+			var files = new Dictionary<string, (IntPtr ptr, UnmanagedMemoryStream stream)>(4);
 
 			try {
 				var longestFileNameLength = 0;