diff --git a/libavcodec/kmvc.c b/libavcodec/kmvc.c
index 5d3dd4ce63..a47afed8fb 100644
--- a/libavcodec/kmvc.c
+++ b/libavcodec/kmvc.c
@@ -413,4 +413,5 @@ const AVCodec ff_kmvc_decoder = {
     .init           = decode_init,
     .decode         = decode_frame,
     .capabilities   = AV_CODEC_CAP_DR1,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };