diff --git a/libavformat/tiertexseq.c b/libavformat/tiertexseq.c
index 16af084b39ffb65ed080a38e7000e4965b0f8a8a..df7c38d0d21304bbd52dc0bad4ed325a8c70522e 100644
--- a/libavformat/tiertexseq.c
+++ b/libavformat/tiertexseq.c
@@ -234,7 +234,7 @@ static int seq_read_header(AVFormatContext *s)
     st->codec->sample_rate = SEQ_SAMPLE_RATE;
     st->codec->bits_per_coded_sample = 16;
     st->codec->bit_rate = st->codec->sample_rate * st->codec->bits_per_coded_sample * st->codec->channels;
-    st->codec->block_align = st->codec->channels * st->codec->bits_per_coded_sample;
+    st->codec->block_align = st->codec->channels * st->codec->bits_per_coded_sample / 8;
 
     return 0;
 }