diff --git a/TwitchDownloaderCore.Tests/M3U8ExtensionTests.cs b/TwitchDownloaderCore.Tests/M3U8ExtensionTests.cs
index eebac9a6..be2a7f27 100644
--- a/TwitchDownloaderCore.Tests/M3U8ExtensionTests.cs
+++ b/TwitchDownloaderCore.Tests/M3U8ExtensionTests.cs
@@ -103,6 +103,8 @@ public static void CorrectlyFindsStreamOfQualityFromOldM3U8Response(string quali
         [InlineData("480p60", "1080p60")]
         [InlineData("852x480p60", "1080p60")]
         [InlineData("Source", "1080p60")]
+        [InlineData("", "1080p60")]
+        [InlineData(null, "1080p60")]
         public static void ReturnsHighestQualityWhenDesiredQualityNotFoundForOldM3U8Response(string qualityString, string expectedPath)
         {
             var m3u8 = new M3U8(new M3U8.Metadata(), new[]