Index: openacs-4/packages/xowiki/tcl/xowiki-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/xowiki-procs.tcl,v
diff -u -r1.542.2.173 -r1.542.2.174
--- openacs-4/packages/xowiki/tcl/xowiki-procs.tcl	22 Mar 2023 13:22:47 -0000	1.542.2.173
+++ openacs-4/packages/xowiki/tcl/xowiki-procs.tcl	23 Mar 2023 14:31:08 -0000	1.542.2.174
@@ -2247,7 +2247,7 @@
     set page [:instantiate_includelet $arg]
     if {$page eq "" || ![nsf::is object $page]} {
       # The variable 'page_name' is required by the message key
-      set page_name $arg
+      set page_name [ns_quotehtml $arg]
       return [:error_during_render [_ xowiki.error-includelet-unknown]]
     }
     if {[$page istype ::xowiki::Page]} {