diff --git a/attachment_category/views/ir_attachment.xml b/attachment_category/views/ir_attachment.xml
index 43b78b0a..419447a7 100644
--- a/attachment_category/views/ir_attachment.xml
+++ b/attachment_category/views/ir_attachment.xml
@@ -32,7 +32,7 @@
         <field name="inherit_id" ref="base.view_attachment_tree"/>
         <field name="arch" type="xml">
             <field name="type" position="after">
-                <field name="category_ids"/>
+                <field name="category_ids" widget="many2many_tags"/>
             </field>
         </field>
     </record>