diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c
index f77548e5a5..fc72300511 100644
--- a/libavcodec/wavpack.c
+++ b/libavcodec/wavpack.c
@@ -1713,5 +1713,5 @@ AVCodec ff_wavpack_decoder = {
     .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
                       AV_CODEC_CAP_SLICE_THREADS,
-    .caps_internal  = FF_CODEC_CAP_ALLOCATE_PROGRESS,
+    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP | FF_CODEC_CAP_ALLOCATE_PROGRESS,
 };