diff --git a/web_dashboard_tile/__manifest__.py b/web_dashboard_tile/__manifest__.py
index 8b990f891..b4b82d2ee 100644
--- a/web_dashboard_tile/__manifest__.py
+++ b/web_dashboard_tile/__manifest__.py
@@ -8,15 +8,11 @@
     "depends": ["web", "board", "mail", "web_widget_color"],
     "author": "initOS GmbH & Co. KG, "
     "GRAP, "
+    "Iván Todorovich <ivan.todorovich@gmail.com>, "
     "Odoo Community Association (OCA)",
     "maintainers": ["legalsylvain"],
     "category": "web",
     "license": "AGPL-3",
-    "contributors": [
-        "initOS GmbH & Co. KG",
-        "GRAP",
-        "Iván Todorovich <ivan.todorovich@gmail.com>",
-    ],
     "data": [
         "security/ir.model.access.csv",
         "security/ir_rule.xml",
diff --git a/web_dashboard_tile/models/tile_category.py b/web_dashboard_tile/models/tile_category.py
index d412fa939..f43c96369 100644
--- a/web_dashboard_tile/models/tile_category.py
+++ b/web_dashboard_tile/models/tile_category.py
@@ -45,11 +45,11 @@ class TileCategory(models.Model):
             'res_model': 'tile.tile',
             'type': 'ir.actions.act_window',
             'view_mode': 'kanban',
-            'domain': "["
-            "('hidden', '=', False),"
-            "'|', ('user_id', '=', False), ('user_id', '=', uid),"
-            "('category_id', '=', %d)"
-            "]" % self.id,
+            'domain': """[
+                ('hidden', '=', False),
+                '|', ('user_id', '=', False), ('user_id', '=', uid),
+                ('category_id', '=', {self.id})
+            ]""".format(self=self),
         }
 
     def _prepare_menu(self):