diff --git a/auquotidien/modules/categories_admin.py b/auquotidien/modules/categories_admin.py
index f53863b..dd246fe 100644
--- a/auquotidien/modules/categories_admin.py
+++ b/auquotidien/modules/categories_admin.py
@@ -28,11 +28,6 @@ import wcs.admin.categories
 
 
 class CategoryUI(wcs.admin.categories.CategoryUI):
-    def __init__(self, category):
-        self.category = category
-        if self.category is None:
-            self.category = Category()
-
     def get_form(self, **kwargs):
         form = super().get_form(**kwargs)
         homepage_redirect_url = get_cfg('misc', {}).get('homepage-redirect-url')
@@ -69,35 +64,10 @@ class CategoryUI(wcs.admin.categories.CategoryUI):
 
 
 class CategoryPage(wcs.admin.categories.CategoryPage):
-    def __init__(self, component):
-        self.category = Category.get(component)
-        self.category_ui = CategoryUI(self.category)
-        get_response().breadcrumb.append((component + '/', self.category.name))
+    category_ui_class = CategoryUI
 
 
 class CategoriesDirectory(wcs.admin.categories.CategoriesDirectory):
     label = N_('Categories')
-
-    def new(self):
-        get_response().breadcrumb.append(('new', _('New')))
-        category_ui = CategoryUI(None)
-        form = category_ui.get_form()
-        if form.get_widget('cancel').parse():
-            return redirect('.')
-
-        if form.is_submitted() and not form.has_errors():
-            try:
-                category_ui.submit_form(form)
-            except ValueError:
-                pass
-            else:
-                return redirect('.')
-
-        html_top('categories', title=_('New Category'))
-        r = TemplateIO(html=True)
-        r += htmltext('<h2>%s</h2>') % _('New Category')
-        r += form.render()
-        return r.getvalue()
-
-    def _q_lookup(self, component):
-        return CategoryPage(component)
+    category_ui_class = CategoryUI
+    category_page_class = CategoryPage