diff --git a/addons/stock_account/res_config.py b/addons/stock_account/res_config.py
index a6076bebf94..af973094fd0 100644
--- a/addons/stock_account/res_config.py
+++ b/addons/stock_account/res_config.py
@@ -38,4 +38,10 @@ class stock_config_settings(osv.osv_memory):
             help="""Install the module that allows to affect landed costs on pickings, and split them onto the different products."""),
     }
 
+
+    def onchange_landed_costs(self, cr, uid, ids, module_landed_costs, context=None):
+        if module_landed_costs:
+            return {'value': {'group_stock_inventory_valuation': True}}
+        return {}
+
 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
diff --git a/addons/stock_account/res_config_view.xml b/addons/stock_account/res_config_view.xml
index 4a48349f8df..7c515c0f2e9 100644
--- a/addons/stock_account/res_config_view.xml
+++ b/addons/stock_account/res_config_view.xml
@@ -19,7 +19,7 @@
                                 <label for="module_stock_invoice_directly"/>
                             </div>
                             <div>
-                                <field name="module_stock_landed_costs" class="oe_inline"/>
+                                <field name="module_stock_landed_costs" on_change="onchange_landed_costs(module_stock_landed_costs)" class="oe_inline"/>
                                 <label for="module_stock_landed_costs"/>
                             </div>
                          </div>