diff --git a/addons/stock_planning/wizard/stock_planning_forecast.py b/addons/stock_planning/wizard/stock_planning_forecast.py
index 60b3de62243..cee44d7bd6f 100644
--- a/addons/stock_planning/wizard/stock_planning_forecast.py
+++ b/addons/stock_planning/wizard/stock_planning_forecast.py
@@ -102,7 +102,7 @@ class stock_sale_forecast_createlines(osv.osv_memory):
         return {
             'domain': "[('id','in', ["+','.join(map(str, forecast_lines))+"])]",
             'view_type': 'form',
-            "view_mode": 'tree, form',
+            "view_mode": 'tree,form',
             'res_model': 'stock.sale.forecast',
             'type': 'ir.actions.act_window',
             'search_view_id': id['res_id'],