diff --git a/libavcodec/cook.c b/libavcodec/cook.c
index 53cb83852e..c5f68c98ba 100644
--- a/libavcodec/cook.c
+++ b/libavcodec/cook.c
@@ -1282,6 +1282,7 @@ AVCodec ff_cook_decoder = {
     .close          = cook_decode_close,
     .decode         = cook_decode_frame,
     .capabilities   = AV_CODEC_CAP_DR1,
+    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
     .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
                                                       AV_SAMPLE_FMT_NONE },
 };