Index: openacs-4/packages/categories/www/cadmin/category-usage.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/categories/www/cadmin/category-usage.tcl,v
diff -u -N -r1.10.2.3 -r1.10.2.4
--- openacs-4/packages/categories/www/cadmin/category-usage.tcl	29 Nov 2019 14:32:04 -0000	1.10.2.3
+++ openacs-4/packages/categories/www/cadmin/category-usage.tcl	20 Dec 2019 21:18:10 -0000	1.10.2.4
@@ -14,7 +14,7 @@
 } {
     category_id:naturalnum,notnull
     tree_id:naturalnum,notnull
-    {locale ""}
+    {locale:word ""}
     object_id:naturalnum,optional
     {page:integer,optional 1}
     {orderby:token,optional object_name}