diff --git a/config.TEMPLATE.inc.php b/config.TEMPLATE.inc.php
index 9109f9d15c2..f08eb07c41c 100644
--- a/config.TEMPLATE.inc.php
+++ b/config.TEMPLATE.inc.php
@@ -244,7 +244,7 @@
 ; Use e.g. "img[src,alt],p" to allow "src" and "alt" attributes to the "img"
 ; tag, and also to permit the "p" paragraph tag. Unspecified attributes will be
 ; stripped.
-allowed_html = "a[href,target],em,strong,cite,code,ul,ol,li,dl,dt,dd,b,i,u,img[src,alt],sup,sub,br,p"
+allowed_html = "a[href|target],em,strong,cite,code,ul,ol,li,dl,dt,dd,b,i,u,img[src|alt],sup,sub,br,p"
 
 ;Is implicit authentication enabled or not