diff --git a/libavformat/movenccenc.c b/libavformat/movenccenc.c
index b91294f706..74f3c4ccfb 100644
--- a/libavformat/movenccenc.c
+++ b/libavformat/movenccenc.c
@@ -412,4 +412,6 @@ int ff_mov_cenc_init(MOVMuxCencContext* ctx, uint8_t* encryption_key,
 void ff_mov_cenc_free(MOVMuxCencContext* ctx)
 {
     av_aes_ctr_free(ctx->aes_ctr);
+    av_freep(&ctx->auxiliary_info);
+    av_freep(&ctx->auxiliary_info_sizes);
 }