diff --git a/libavcodec/fic.c b/libavcodec/fic.c
index 457d74d7cd..d29f6d16fb 100644
--- a/libavcodec/fic.c
+++ b/libavcodec/fic.c
@@ -494,4 +494,5 @@ const AVCodec ff_fic_decoder = {
     .close          = fic_decode_close,
     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS,
     .priv_class     = &fic_decoder_class,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };