diff --git a/libavformat/assenc.c b/libavformat/assenc.c
index 9a2f966dff..3be4334172 100644
--- a/libavformat/assenc.c
+++ b/libavformat/assenc.c
@@ -86,5 +86,5 @@ AVOutputFormat ass_muxer = {
     .write_header   = write_header,
     .write_packet   = write_packet,
     .write_trailer  = write_trailer,
-    .flags = AVFMT_GLOBALHEADER | AVFMT_NOTIMESTAMPS
+    .flags          = AVFMT_GLOBALHEADER | AVFMT_NOTIMESTAMPS,
 };