diff --git a/TODO b/TODO
index 3bfc5c6301a..450d69bb795 100644
--- a/TODO
+++ b/TODO
@@ -3,6 +3,8 @@ parenthesis means that person has taken on this project.
 
 global
 ------
+    * make sure that all ZTS globals get destructed. Most ts_allocate_id()
+      calls should have a dtor entry.
     * activate all extensions by default that don't rely on external
       dependices. (eg ftp)
     * --enable-all in configure. (--enable-shared=max ...)
diff --git a/ext/xml/xml.c b/ext/xml/xml.c
index b560b94b8cd..0653ace9987 100644
--- a/ext/xml/xml.c
+++ b/ext/xml/xml.c
@@ -164,7 +164,7 @@ PHP_MINIT_FUNCTION(xml)
 	le_xml_parser =	register_list_destructors(xml_parser_dtor, NULL);
 
 #ifdef ZTS
-	xml_globals_id = ts_allocate_id(sizeof(php_xml_globals), php_xml_init_globals, NULL);
+	xml_globals_id = ts_allocate_id(sizeof(php_xml_globals), (ts_allocate_ctor) php_xml_init_globals, NULL);
 #else
 	XML(default_encoding) = "ISO-8859-1";
 #endif