diff --git a/beetsplug/web/__init__.py b/beetsplug/web/__init__.py
index cebb0be0a..cd7e8a3fc 100644
--- a/beetsplug/web/__init__.py
+++ b/beetsplug/web/__init__.py
@@ -336,7 +336,6 @@ def item_file(item_id):
     response = flask.send_file(
         item_path, as_attachment=True, download_name=safe_filename
     )
-    response.headers["Content-Length"] = os.path.getsize(item_path)
     return response
 
 
diff --git a/docs/changelog.rst b/docs/changelog.rst
index f9e923aa3..de629dfc2 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -282,6 +282,8 @@ Bug fixes:
   :bug:`4973`
 * Fix bug regarding displaying tracks that have been changed not being
   displayed unless the detail configuration is enabled.
+* :doc:`/plugins/web`: Fix range request support, allowing to play large audio/
+  opus files using e.g. a browser/firefox or gstreamer/mopidy directly.
 
 For plugin developers: