diff --git a/libavformat/dsicin.c b/libavformat/dsicin.c
index 8cba461487d30..ecc8c0b6af320 100644
--- a/libavformat/dsicin.c
+++ b/libavformat/dsicin.c
@@ -24,6 +24,7 @@
  * Delphine Software International CIN file demuxer
  */
 
+#include "libavutil/channel_layout.h"
 #include "libavutil/intreadwrite.h"
 #include "avformat.h"
 #include "internal.h"
@@ -131,6 +132,7 @@ static int cin_read_header(AVFormatContext *s)
     st->codec->codec_id = AV_CODEC_ID_DSICINAUDIO;
     st->codec->codec_tag = 0;  /* no tag */
     st->codec->channels = 1;
+    st->codec->channel_layout = AV_CH_LAYOUT_MONO;
     st->codec->sample_rate = 22050;
     st->codec->bits_per_coded_sample = 8;
     st->codec->bit_rate = st->codec->sample_rate * st->codec->bits_per_coded_sample * st->codec->channels;