diff --git a/view/user_form.xml b/view/user_form.xml
index 2d3e4e7..3441e01 100644
--- a/view/user_form.xml
+++ b/view/user_form.xml
@@ -7,6 +7,6 @@ copyright notices and license terms. -->
         expr="/form/notebook/page[@id="preferences"]/field[@name="shop"]"
         position="after">
         <label name="sale_device"/>
-        <field name="sale_device"/>
+        <field name="sale_device" widget="selection"/>
     </xpath>
 </data>