Index: openacs-4/packages/assessment-portlet/www/assessment-portlet.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/assessment-portlet/www/assessment-portlet.tcl,v
diff -u -r1.17.2.1 -r1.17.2.2
--- openacs-4/packages/assessment-portlet/www/assessment-portlet.tcl	10 Sep 2015 08:28:10 -0000	1.17.2.1
+++ openacs-4/packages/assessment-portlet/www/assessment-portlet.tcl	26 Jan 2017 09:30:44 -0000	1.17.2.2
@@ -7,7 +7,7 @@
     @creation-date Oct 2004
     @cvs_id $Id$
 } {
-    {page_num 0}
+    {page_num:naturalnum,notnull 0}
 } -properties {
 }