Index: openacs-4/packages/calendar/www/cal-item-view.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/calendar/www/cal-item-view.tcl,v
diff -u -r1.24.4.1 -r1.24.4.2
--- openacs-4/packages/calendar/www/cal-item-view.tcl	26 Oct 2013 09:33:21 -0000	1.24.4.1
+++ openacs-4/packages/calendar/www/cal-item-view.tcl	5 Aug 2014 13:07:00 -0000	1.24.4.2
@@ -5,7 +5,7 @@
     @creation-date April 09, 2002
     @cvs-id $Id$
 } {
-    cal_item_id:integer
+    cal_item_id:naturalnum,notnull
     {return_url [ad_return_url]}
 }