diff --git a/libavformat/isom.c b/libavformat/isom.c
index 3b1235dd0a..309aabca3a 100644
--- a/libavformat/isom.c
+++ b/libavformat/isom.c
@@ -207,6 +207,7 @@ const AVCodecTag codec_movaudio_tags[] = {
     { CODEC_ID_ALAC, MKTAG('a', 'l', 'a', 'c') }, /* Apple Lossless */
 
     { CODEC_ID_QCELP, MKTAG('Q','c','l','p') },
+    { CODEC_ID_QCELP, MKTAG('Q','c','l','q') },
     { CODEC_ID_QCELP, MKTAG('s','q','c','p') }, /* ISO Media fourcc */
 
     { CODEC_ID_QDM2, MKTAG('Q', 'D', 'M', '2') }, /* QDM2 */