diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c
index be95e222aa..da61617f4e 100644
--- a/libavcodec/svq3.c
+++ b/libavcodec/svq3.c
@@ -1601,5 +1601,5 @@ const AVCodec ff_svq3_decoder = {
                       AV_CODEC_CAP_DELAY,
     .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P,
                                                      AV_PIX_FMT_NONE},
-    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
 };