diff --git a/YoutubeExtractor/YoutubeExtractor/DownloadUrlResolver.cs b/YoutubeExtractor/YoutubeExtractor/DownloadUrlResolver.cs
index fc535f1..2352f3a 100644
--- a/YoutubeExtractor/YoutubeExtractor/DownloadUrlResolver.cs
+++ b/YoutubeExtractor/YoutubeExtractor/DownloadUrlResolver.cs
@@ -175,7 +175,7 @@ private static string GetHtml5PlayerVersion(string url)
 
         private static List<Format> GetStreamMap(YoutubeModel model)
         {
-            return model.StreamingData.Formats.ToList();
+            return model.StreamingData.Formats.ToList(); //getting exception
         }
 
         private static IEnumerable<VideoInfo> GetVideoInfos(YoutubeModel model)
@@ -291,4 +291,4 @@ private static void ThrowYoutubeParseException(Exception innerException, string
                                             "Please report this bug at www.github.com/flagbug/YoutubeExtractor/issues", innerException);
         }
     }
-}
\ No newline at end of file
+}