diff --git a/libavcodec/sonic.c b/libavcodec/sonic.c
index c635005bec..1bd604a2fa 100644
--- a/libavcodec/sonic.c
+++ b/libavcodec/sonic.c
@@ -1096,6 +1096,7 @@ AVCodec ff_sonic_decoder = {
     .close          = sonic_decode_close,
     .decode         = sonic_decode_frame,
     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_EXPERIMENTAL,
+    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
 };
 #endif /* CONFIG_SONIC_DECODER */
 
@@ -1110,6 +1111,7 @@ AVCodec ff_sonic_encoder = {
     .encode2        = sonic_encode_frame,
     .sample_fmts    = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE },
     .capabilities   = AV_CODEC_CAP_EXPERIMENTAL,
+    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
     .close          = sonic_encode_close,
 };
 #endif
@@ -1125,6 +1127,7 @@ AVCodec ff_sonic_ls_encoder = {
     .encode2        = sonic_encode_frame,
     .sample_fmts    = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE },
     .capabilities   = AV_CODEC_CAP_EXPERIMENTAL,
+    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
     .close          = sonic_encode_close,
 };
 #endif