diff --git a/libavcodec/j2kdec.c b/libavcodec/j2kdec.c
index d605b13ea7..c4cf017129 100644
--- a/libavcodec/j2kdec.c
+++ b/libavcodec/j2kdec.c
@@ -1078,5 +1078,5 @@ AVCodec ff_jpeg2000_decoder = {
     .capabilities = CODEC_CAP_EXPERIMENTAL,
     .long_name = NULL_IF_CONFIG_SMALL("JPEG 2000"),
     .pix_fmts =
-        (enum PixelFormat[]) {PIX_FMT_GRAY8, PIX_FMT_RGB24, -1}
+        (enum PixelFormat[]) {PIX_FMT_GRAY8, PIX_FMT_RGB24, PIX_FMT_NONE}
 };
diff --git a/libavcodec/mjpegenc.c b/libavcodec/mjpegenc.c
index 0fd5e5aab6..454a8047ef 100644
--- a/libavcodec/mjpegenc.c
+++ b/libavcodec/mjpegenc.c
@@ -490,6 +490,6 @@ AVCodec ff_amv_encoder = {
     .init           = MPV_encode_init,
     .encode         = amv_encode_picture,
     .close          = MPV_encode_end,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, -1},
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_NONE},
     .long_name      = NULL_IF_CONFIG_SMALL("AMV Video"),
 };