diff --git a/mod/wiki/ewiki/plugins/moodle/f_fixhtml.php b/mod/wiki/ewiki/plugins/moodle/f_fixhtml.php
index 8202cda8a63..07967752111 100644
--- a/mod/wiki/ewiki/plugins/moodle/f_fixhtml.php
+++ b/mod/wiki/ewiki/plugins/moodle/f_fixhtml.php
@@ -13,7 +13,7 @@
 */
 
 
-define("EWIKI_XHTML", 0);
+define("EWIKI_XHTML", 1);
 $ewiki_plugins["page_final"][] = "ewiki_html_tag_balancer";