Index: openacs-4/packages/forums/www/message-email.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/forums/www/message-email.tcl,v
diff -u -r1.16.4.1 -r1.16.4.2
--- openacs-4/packages/forums/www/message-email.tcl	14 Dec 2013 17:03:10 -0000	1.16.4.1
+++ openacs-4/packages/forums/www/message-email.tcl	29 Jul 2014 11:24:04 -0000	1.16.4.2
@@ -7,7 +7,7 @@
     @cvs-id $Id$
 
 } {
-    message_id:integer,notnull
+    message_id:naturalnum,notnull
 }
 
 # require login to avoid abuse from spammers