diff --git a/libavcodec/flacdec.c b/libavcodec/flacdec.c
index 4ed15c9e0b..2c5f22ce2c 100644
--- a/libavcodec/flacdec.c
+++ b/libavcodec/flacdec.c
@@ -650,7 +650,8 @@ static int flac_decode_frame(AVCodecContext *avctx,
     }
 
     /* check that there is at least the smallest decodable amount of data.
-       this amount corresponds to the smallest valid FLAC frame possible. */
+       this amount corresponds to the smallest valid FLAC frame possible.
+       FF F8 69 02 00 00 9A 00 00 34 46 */
     if (buf_size < 11)
         goto end;