diff --git a/Kyoo/Views/API/SubtitleApi.cs b/Kyoo/Views/API/SubtitleApi.cs
index 9c9ef04d..64238563 100644
--- a/Kyoo/Views/API/SubtitleApi.cs
+++ b/Kyoo/Views/API/SubtitleApi.cs
@@ -128,7 +128,7 @@ namespace Kyoo.Api
 
 		private static IEnumerable<string> ConvertBlock(IList<string> lines)
 		{
-			if (lines.Length < 3)
+			if (lines.Count < 3)
 				return lines;		
 			lines[1] = lines[1].Replace(',', '.');
 			if (lines[2].Length > 5)