diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 3358e2df1f..66638c8f22 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -2584,7 +2584,8 @@ int av_match_ext(const char *filename, const char *extensions);
  * @return 1 if codec with ID codec_id can be stored in ofmt, 0 if it cannot.
  *         A negative number if this information is not available.
  */
-int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance);
+int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
+                         int std_compliance);
 
 /**
  * @defgroup riff_fourcc RIFF FourCCs
diff --git a/libavformat/utils.c b/libavformat/utils.c
index e095d601e1..9404118b96 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -4171,7 +4171,7 @@ int64_t ff_iso8601_to_unix_time(const char *datestr)
         return av_timegm(&time1);
 }
 
-int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id,
+int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
                          int std_compliance)
 {
     if (ofmt) {