Index: openacs-4/packages/calendar/www/cal-item-outlook.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/calendar/www/cal-item-outlook.tcl,v
diff -u -r1.4 -r1.5
--- openacs-4/packages/calendar/www/cal-item-outlook.tcl	8 Aug 2006 21:26:18 -0000	1.4
+++ openacs-4/packages/calendar/www/cal-item-outlook.tcl	27 Oct 2014 16:41:08 -0000	1.5
@@ -8,7 +8,7 @@
     @creation-date May 28, 2002
     @cvs-id $Id$
 } {
-    cal_item_id:integer
+    cal_item_id:naturalnum,notnull
 }
 
 ad_returnredirect "ics/${cal_item_id}.ics"