diff --git a/changelog.d/17350.feature b/changelog.d/17350.feature
new file mode 100644
index 0000000000..c8436aa898
--- /dev/null
+++ b/changelog.d/17350.feature
@@ -0,0 +1,2 @@
+Support [MSC3916](https://github.com/matrix-org/matrix-spec-proposals/blob/rav/authentication-for-media/proposals/3916-authentication-for-media.md)
+by adding a federation /download endpoint (#17350).
\ No newline at end of file
diff --git a/synapse/media/_base.py b/synapse/media/_base.py
index d060b29cd1..0d51091655 100644
--- a/synapse/media/_base.py
+++ b/synapse/media/_base.py
@@ -309,7 +309,6 @@ async def respond_with_multipart_responder(
             clock, request, media_info.media_type, {}
         )
 
-
         logger.debug("Responding to media request with responder %s", responder)
         # ensure that the response length takes into account the multipart boundary and headers,
         # which is currently 177 bytes (note that this will need to be determined dynamically when