diff --git a/addons/mrp/mrp.py b/addons/mrp/mrp.py
index a8f5d61f117..075dbfe957d 100644
--- a/addons/mrp/mrp.py
+++ b/addons/mrp/mrp.py
@@ -955,7 +955,10 @@ class mrp_production(osv.osv):
             partner_id = routing_loc.partner_id and routing_loc.partner_id.id or False
 
         # Take next Sequence number of shipment base on type
-        pick_name = ir_sequence.get(cr, uid, 'stock.picking.' + pick_type)
+        if pick_type!='internal':
+            pick_name = ir_sequence.get(cr, uid, 'stock.picking.' + pick_type)
+        else:
+            pick_name = ir_sequence.get(cr, uid, 'stock.picking')
 
         picking_id = stock_picking.create(cr, uid, {
             'name': pick_name,