diff --git a/src/knot/server/serialization.c b/src/knot/server/serialization.c
index 21c0d9d68c9fb7b951704abdaf4c02af6d4cde4e..8d708f87aac5b17b23dd420823abb133f85030a2 100644
--- a/src/knot/server/serialization.c
+++ b/src/knot/server/serialization.c
@@ -92,8 +92,6 @@ int changeset_binary_size(const changeset_t *chgset, size_t *size)
 	}
 
 	*size = soa_from_size + soa_to_size + remove_size + add_size;
-	/* + Changeset flags. */
-	*size += sizeof(uint32_t);
 
 	return KNOT_EOK;
 }