diff --git a/libavformat/aiffdec.c b/libavformat/aiffdec.c
index c6b51877b5..b3cbc112ca 100644
--- a/libavformat/aiffdec.c
+++ b/libavformat/aiffdec.c
@@ -263,12 +263,12 @@ static int aiff_read_header(AVFormatContext *s)
         }
     }
 
+got_sound:
     if (!st->codec->block_align) {
-        av_log(s, AV_LOG_ERROR, "could not find COMM tag\n");
+        av_log(s, AV_LOG_ERROR, "could not find COMM tag or invalid block_align value\n");
         return -1;
     }
 
-got_sound:
     /* Now positioned, get the sound data start and end */
     avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
     st->start_time = 0;