diff --git a/addons/base/controllers/main.py b/addons/base/controllers/main.py
index 78d1c957a6e..12671f42e5b 100644
--- a/addons/base/controllers/main.py
+++ b/addons/base/controllers/main.py
@@ -325,7 +325,7 @@ def fix_view_modes(action):
         generate_views(action)
 
     if action.pop('view_type') != 'form':
-        return
+        return action
 
     action['views'] = [
         [id, mode if mode != 'tree' else 'list']