diff --git a/libmpdemux/demux_lavf.c b/libmpdemux/demux_lavf.c
index 7005a22d3a..64d8c04970 100644
--- a/libmpdemux/demux_lavf.c
+++ b/libmpdemux/demux_lavf.c
@@ -78,6 +78,7 @@ static const AVCodecTag mp_wav_tags[] = {
     { CODEC_ID_ADPCM_IMA_WS,      MKTAG('A', 'I', 'W', 'S')},
     { CODEC_ID_ADPCM_THP,         MKTAG('T', 'H', 'P', 'A')},
     { CODEC_ID_AMR_NB,            MKTAG('n', 'b',   0,   0)},
+    { CODEC_ID_COOK,              MKTAG('c', 'o', 'o', 'k')},
     { CODEC_ID_DSICINAUDIO,       MKTAG('D', 'C', 'I', 'A')},
     { CODEC_ID_INTERPLAY_DPCM,    MKTAG('I', 'N', 'P', 'A')},
     { CODEC_ID_MUSEPACK7,         MKTAG('M', 'P', 'C', ' ')},