diff --git a/libavformat/fsb.c b/libavformat/fsb.c
index 4189822d8e..0febeffd56 100644
--- a/libavformat/fsb.c
+++ b/libavformat/fsb.c
@@ -157,7 +157,6 @@ static int fsb_read_header(AVFormatContext *s)
     }
 
     avio_skip(pb, offset - avio_tell(pb));
-    ffformatcontext(s)->data_offset = avio_tell(pb);
 
     avpriv_set_pts_info(st, 64, 1, par->sample_rate);