diff --git a/libavformat/riff.c b/libavformat/riff.c
index 0b09f4d3ea..0a3bc95062 100644
--- a/libavformat/riff.c
+++ b/libavformat/riff.c
@@ -277,6 +277,8 @@ const AVCodecTag ff_codec_wav_tags[] = {
     { CODEC_ID_ADPCM_CT,        0x0200 },
     { CODEC_ID_ATRAC3,          0x0270 },
     { CODEC_ID_IMC,             0x0401 },
+    { CODEC_ID_GSM_MS,          0x1500 },
+    { CODEC_ID_TRUESPEECH,      0x1501 },
     { CODEC_ID_AC3,             0x2000 },
     { CODEC_ID_DTS,             0x2001 },
     { CODEC_ID_SONIC,           0x2048 },