diff --git a/libavformat/riff.h b/libavformat/riff.h
index 2696a0b3c9..69146a8834 100644
--- a/libavformat/riff.h
+++ b/libavformat/riff.h
@@ -47,7 +47,7 @@ void ff_get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size);
 extern const AVCodecTag ff_codec_bmp_tags[];
 extern const AVCodecTag ff_codec_wav_tags[];
 
-unsigned int ff_codec_get_tag(const AVCodecTag *tags, int id);
+unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id);
 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag);
 void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale);
 
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 435720f4a4..e5a6ce1846 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2024,7 +2024,7 @@ static int try_decode_frame(AVStream *st, AVPacket *avpkt)
     return ret;
 }
 
-unsigned int ff_codec_get_tag(const AVCodecTag *tags, int id)
+unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
 {
     while (tags->id != CODEC_ID_NONE) {
         if (tags->id == id)