--- httpd-2.4.58/modules/filters/mod_xml2enc.c.orig	2023-12-29 11:30:50.683697976 +0100
+++ httpd-2.4.58/modules/filters/mod_xml2enc.c	2023-12-29 11:31:08.853733261 +0100
@@ -35,6 +35,7 @@
 #endif
 
 /* libxml2 */
+#include <libxml/parser.h>
 #include <libxml/encoding.h>
 
 #if defined(__clang__)