diff --git a/libavcodec/cbs_sei.c b/libavcodec/cbs_sei.c
index eefa07cf00..458751d92e 100644
--- a/libavcodec/cbs_sei.c
+++ b/libavcodec/cbs_sei.c
@@ -41,7 +41,6 @@ int ff_cbs_sei_alloc_message_payload(SEIRawMessage *message,
                                      const SEIMessageTypeDescriptor *desc)
 {
     void (*free_func)(FFRefStructOpaque, void*);
-    unsigned flags = 0;
 
     av_assert0(message->payload     == NULL &&
                message->payload_ref == NULL);
@@ -53,10 +52,9 @@ int ff_cbs_sei_alloc_message_payload(SEIRawMessage *message,
         free_func = &cbs_free_user_data_unregistered;
     else {
         free_func = NULL;
-        flags = FF_REFSTRUCT_FLAG_NO_ZEROING;
     }
 
-    message->payload_ref = ff_refstruct_alloc_ext(desc->size, flags,
+    message->payload_ref = ff_refstruct_alloc_ext(desc->size, 0,
                                                   NULL, free_func);
     if (!message->payload_ref)
         return AVERROR(ENOMEM);