diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index e593ad19af..385ee34803 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -798,7 +798,7 @@ extern const FFCodec ff_libvorbis_decoder;
 extern const FFCodec ff_libvpx_vp8_encoder;
 extern const FFCodec ff_libvpx_vp8_decoder;
 extern FFCodec ff_libvpx_vp9_encoder;
-extern FFCodec ff_libvpx_vp9_decoder;
+extern const FFCodec ff_libvpx_vp9_decoder;
 /* preferred over libwebp */
 extern const FFCodec ff_libwebp_anim_encoder;
 extern const FFCodec ff_libwebp_encoder;
diff --git a/libavcodec/libvpxdec.c b/libavcodec/libvpxdec.c
index 8e6291fe20..f480545ae0 100644
--- a/libavcodec/libvpxdec.c
+++ b/libavcodec/libvpxdec.c
@@ -377,7 +377,7 @@ static av_cold int vp9_init(AVCodecContext *avctx)
     return vpx_init(avctx, &ctx->decoder, vpx_codec_vp9_dx());
 }
 
-FFCodec ff_libvpx_vp9_decoder = {
+const FFCodec ff_libvpx_vp9_decoder = {
     .p.name         = "libvpx-vp9",
     CODEC_LONG_NAME("libvpx VP9"),
     .p.type         = AVMEDIA_TYPE_VIDEO,