diff --git a/TwitchDownloaderCore/Extensions/M3U8Extensions.cs b/TwitchDownloaderCore/Extensions/M3U8Extensions.cs
index d2db63cc..29571e15 100644
--- a/TwitchDownloaderCore/Extensions/M3U8Extensions.cs
+++ b/TwitchDownloaderCore/Extensions/M3U8Extensions.cs
@@ -32,7 +32,7 @@ public static M3U8.Stream GetStreamOfQuality(this M3U8 m3u8, string qualityStrin
                 throw new ArgumentException(nameof(m3u8), "M3U8 does not contain any streams.");
             }
 
-            if (qualityString is null)
+            if (string.IsNullOrWhiteSpace(qualityString))
             {
                 return m3u8.BestQualityStream();
             }
diff --git a/TwitchDownloaderCore/Tools/M3U8.cs b/TwitchDownloaderCore/Tools/M3U8.cs
index 900b5470..7a9cf883 100644
--- a/TwitchDownloaderCore/Tools/M3U8.cs
+++ b/TwitchDownloaderCore/Tools/M3U8.cs
@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
 using System.IO;
 using System.Text;
diff --git a/TwitchDownloaderCore/VideoDownloader.cs b/TwitchDownloaderCore/VideoDownloader.cs
index 49a21527..5ab1a333 100644
--- a/TwitchDownloaderCore/VideoDownloader.cs
+++ b/TwitchDownloaderCore/VideoDownloader.cs
@@ -56,7 +56,7 @@ public async Task DownloadAsync(CancellationToken cancellationToken)
 
                 GqlVideoChapterResponse videoChapterResponse = await TwitchHelper.GetOrGenerateVideoChapters(downloadOptions.Id, videoInfoResponse.data.video);
 
-                var qualityPlaylist = await GetQualityPlaylist(videoInfoResponse);
+                var qualityPlaylist = await GetQualityPlaylist();
 
                 var playlistUrl = qualityPlaylist.Path;
                 var baseUrl = new Uri(playlistUrl[..(playlistUrl.LastIndexOf('/') + 1)], UriKind.Absolute);
@@ -556,7 +556,7 @@ private static Range GetStreamListCrop(IList<M3U8.Stream> streamList, VideoDownl
             return new Range(startIndex, endIndex);
         }
 
-        private async Task<M3U8.Stream> GetQualityPlaylist(GqlVideoResponse videoInfo)
+        private async Task<M3U8.Stream> GetQualityPlaylist()
         {
             GqlVideoTokenResponse accessToken = await TwitchHelper.GetVideoToken(downloadOptions.Id, downloadOptions.Oauth);