diff --git a/libavcodec/bmvaudio.c b/libavcodec/bmvaudio.c
index 0c3aad0f2f..a7eae46103 100644
--- a/libavcodec/bmvaudio.c
+++ b/libavcodec/bmvaudio.c
@@ -86,4 +86,5 @@ const AVCodec ff_bmv_audio_decoder = {
     .init           = bmv_aud_decode_init,
     .decode         = bmv_aud_decode_frame,
     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };