--- a/src/xml_elem.c	2012-08-12 09:18:59.000000000 -0600
+++ b/src/xml_elem.c	2023-07-11 13:17:14.220809280 -0600
@@ -186,7 +186,7 @@
  * put @name into @data->array[@data->offset]
  */
 static void
-hash_key_put(void *payload, void *data, xmlChar *name)
+hash_key_put(void *payload, void *data, const xmlChar *name)
 {
     ArrayDest *dest = data;
     dest->array[dest->offset++] = name;