Index: openacs-4/packages/dotlrn/www/admin/browse-toggle.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/dotlrn/www/admin/browse-toggle.tcl,v
diff -u -N -r1.4.10.1 -r1.4.10.2
--- openacs-4/packages/dotlrn/www/admin/browse-toggle.tcl	11 Sep 2015 11:40:49 -0000	1.4.10.1
+++ openacs-4/packages/dotlrn/www/admin/browse-toggle.tcl	26 Jan 2017 11:46:02 -0000	1.4.10.2
@@ -21,8 +21,8 @@
     @creation-date November 19, 2002
     @version $Id$
 } -query {
-    user_id
-    can_browse_p
+    user_id:naturalnum,notnull
+    can_browse_p:boolean
     {referer "users"}
 }