diff --git a/addons/purchase_requisition/purchase_requisition.py b/addons/purchase_requisition/purchase_requisition.py
index 6220169134b..d89b33007a5 100644
--- a/addons/purchase_requisition/purchase_requisition.py
+++ b/addons/purchase_requisition/purchase_requisition.py
@@ -148,11 +148,15 @@ class purchase_requisition(osv.osv):
         }
 
     def _prepare_purchase_order_line(self, cr, uid, requisition, requisition_line, purchase_id, supplier, context=None):
+        if context is None:
+            context = {}
         po_line_obj = self.pool.get('purchase.order.line')
         product_uom = self.pool.get('product.uom')
         product = requisition_line.product_id
         default_uom_po_id = product.uom_po_id.id
-        date_order = requisition.ordering_date and fields.date.date_to_datetime(self, cr, uid, requisition.ordering_date, context=context) or fields.datetime.now()
+        ctx = context.copy()
+        ctx['tz'] = requisition.user_id.tz
+        date_order = requisition.ordering_date and fields.date.date_to_datetime(self, cr, uid, requisition.ordering_date, context=ctx) or fields.datetime.now()
         qty = product_uom._compute_qty(cr, uid, requisition_line.product_uom_id.id, requisition_line.product_qty, default_uom_po_id)
         supplier_pricelist = supplier.property_product_pricelist_purchase and supplier.property_product_pricelist_purchase.id or False
         vals = po_line_obj.onchange_product_id(