diff --git a/wobuzz/player/playlist.py b/wobuzz/player/playlist.py
index 1fc7d2b..0bba6a7 100644
--- a/wobuzz/player/playlist.py
+++ b/wobuzz/player/playlist.py
@@ -296,6 +296,8 @@ class Playlist:
 
         wbz_data = ""
 
+        wbz_data += wbzm3u.assemble_line(WBZM3UData.Header)
+
         for order in self.sorting:
             wbz_data += wbzm3u.assemble_line(order)
 
diff --git a/wobuzz/wobuzzm3u/wobuzzm3u.py b/wobuzz/wobuzzm3u/wobuzzm3u.py
index c536483..b9891f4 100644
--- a/wobuzz/wobuzzm3u/wobuzzm3u.py
+++ b/wobuzz/wobuzzm3u/wobuzzm3u.py
@@ -60,7 +60,7 @@ class WobuzzM3U:
         return WBZM3UData.Path(line)
 
     def assemble_line(self, data: WBZM3UData) -> str | None:
-        if isinstance(data, WBZM3UData.Header):
+        if data is WBZM3UData.Header or isinstance(data, WBZM3UData.Header):
             return "#WOBUZZM3U\n"
 
         if isinstance(data, WBZM3UData.Path):