diff --git a/libavcodec/bmpenc.c b/libavcodec/bmpenc.c
index ee2a2d0ea9..139ceb3844 100644
--- a/libavcodec/bmpenc.c
+++ b/libavcodec/bmpenc.c
@@ -171,4 +171,5 @@ const AVCodec ff_bmp_encoder = {
         AV_PIX_FMT_MONOBLACK,
         AV_PIX_FMT_NONE
     },
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };