diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index aca8b9d585..c4fcb5f8b1 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -1241,13 +1241,7 @@ static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
                 avio_wb16(pb, 16);
             avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
         } else { /* reserved for mp4/3gp */
-            if (track->par->codec_id == AV_CODEC_ID_FLAC ||
-                track->par->codec_id == AV_CODEC_ID_ALAC ||
-                track->par->codec_id == AV_CODEC_ID_OPUS) {
-                avio_wb16(pb, track->par->ch_layout.nb_channels);
-            } else {
-                avio_wb16(pb, 2);
-            }
+            avio_wb16(pb, track->par->ch_layout.nb_channels);
             if (track->par->codec_id == AV_CODEC_ID_FLAC ||
                 track->par->codec_id == AV_CODEC_ID_ALAC) {
                 avio_wb16(pb, track->par->bits_per_raw_sample);
diff --git a/tests/ref/fate/mov-mp4-chapters b/tests/ref/fate/mov-mp4-chapters
index 34f84de1b1..75cd3b3438 100644
--- a/tests/ref/fate/mov-mp4-chapters
+++ b/tests/ref/fate/mov-mp4-chapters
@@ -1,4 +1,4 @@
-1fd844c2f5bf77c3344e88e30ad994e1 *tests/data/fate/mov-mp4-chapters.mp4
+7b6aaa99c86fa1f5abfc9f242abcfffa *tests/data/fate/mov-mp4-chapters.mp4
 111248 tests/data/fate/mov-mp4-chapters.mp4
 #extradata 0:     3469, 0xc6769ddc
 #tb 0: 1/44100