diff --git a/openerp/addons/base/res/res_partner_view.xml b/openerp/addons/base/res/res_partner_view.xml
index e3924cb4e5d..35589aa8037 100644
--- a/openerp/addons/base/res/res_partner_view.xml
+++ b/openerp/addons/base/res/res_partner_view.xml
@@ -426,7 +426,7 @@
                         <page string="History" invisible="True">
                         </page>
                         <page string="Categories">
-                            <field name="category_id" colspan="4" nolabel="1"/>
+                            <field name="category_id" colspan="4" nolabel="1" widget="many2many_tags"/>
                         </page>
                         <page string="Notes">
                             <field name="comment" colspan="4" nolabel="1"/>