diff --git a/libavcodec/dsicinaudio.c b/libavcodec/dsicinaudio.c
index cb3fd22e46..39869ac0cd 100644
--- a/libavcodec/dsicinaudio.c
+++ b/libavcodec/dsicinaudio.c
@@ -130,4 +130,5 @@ const AVCodec ff_dsicinaudio_decoder = {
     .init           = cinaudio_decode_init,
     .decode         = cinaudio_decode_frame,
     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };