diff --git a/src/N_m3u8DL-RE.Common/Entity/WebVttSub.cs b/src/N_m3u8DL-RE.Common/Entity/WebVttSub.cs
index 05edda9..77de827 100644
--- a/src/N_m3u8DL-RE.Common/Entity/WebVttSub.cs
+++ b/src/N_m3u8DL-RE.Common/Entity/WebVttSub.cs
@@ -50,6 +50,7 @@ namespace N_m3u8DL_RE.Common.Entity
             if (!text.Trim().StartsWith("WEBVTT"))
                 throw new Exception("Bad vtt!");
 
+            text += Environment.NewLine;
 
             var webSub = new WebVttSub();
             var needPayload = false;