diff --git a/addons/website_sale/controllers/main.py b/addons/website_sale/controllers/main.py
index eceb6a731c0..5a576083582 100644
--- a/addons/website_sale/controllers/main.py
+++ b/addons/website_sale/controllers/main.py
@@ -2,7 +2,7 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 import json
 import logging
-from werkzeug.exceptions import Forbidden
+from werkzeug.exceptions import Forbidden, NotFound
 
 from odoo import http, tools, _
 from odoo.http import request
@@ -193,6 +193,11 @@ class WebsiteSale(http.Controller):
         else:
             ppg = PPG
 
+        if category:
+            category = request.env['product.public.category'].search([('id', '=', int(category))], limit=1)
+            if not category:
+                raise NotFound()
+
         attrib_list = request.httprequest.args.getlist('attrib')
         attrib_values = [map(int, v.split("-")) for v in attrib_list if v]
         attributes_ids = set([v[0] for v in attrib_values])
@@ -213,9 +218,6 @@ class WebsiteSale(http.Controller):
         url = "/shop"
         if search:
             post["search"] = search
-        if category:
-            category = request.env['product.public.category'].browse(int(category))
-            url = "/shop/category/%s" % slug(category)
         if attrib_list:
             post['attrib'] = attrib_list
 
@@ -224,6 +226,7 @@ class WebsiteSale(http.Controller):
 
         parent_category_ids = []
         if category:
+            url = "/shop/category/%s" % slug(category)
             parent_category_ids = [category.id]
             current_category = category
             while current_category.parent_id: