diff --git a/libavcodec/pcm-dvd.c b/libavcodec/pcm-dvd.c
index becb572953..3dda218bf4 100644
--- a/libavcodec/pcm-dvd.c
+++ b/libavcodec/pcm-dvd.c
@@ -303,5 +303,6 @@ AVCodec ff_pcm_dvd_decoder = {
                       AV_CODEC_CAP_DR1,
     .sample_fmts    = (const enum AVSampleFormat[]) {
         AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_NONE
-    }
+    },
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };