diff --git a/libavformat/riff.c b/libavformat/riff.c
index 7c40c6f2ca..047af0ab61 100644
--- a/libavformat/riff.c
+++ b/libavformat/riff.c
@@ -425,9 +425,9 @@ void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size)
 }
 
 
-int wav_codec_get_id(unsigned int tag, int bps)
+enum CodecID wav_codec_get_id(unsigned int tag, int bps)
 {
-    int id;
+    enum CodecID id;
     id = codec_get_id(codec_wav_tags, tag);
     if (id <= 0)
         return id;
diff --git a/libavformat/riff.h b/libavformat/riff.h
index bd4e9f16ae..93c1d71cf3 100644
--- a/libavformat/riff.h
+++ b/libavformat/riff.h
@@ -41,7 +41,7 @@ typedef struct AVCodecTag {
 
 void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf);
 int put_wav_header(ByteIOContext *pb, AVCodecContext *enc);
-int wav_codec_get_id(unsigned int tag, int bps);
+enum CodecID wav_codec_get_id(unsigned int tag, int bps);
 void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size);
 
 extern const AVCodecTag codec_bmp_tags[];