diff --git a/addons/stock/wizard/stock_change_product_qty.py b/addons/stock/wizard/stock_change_product_qty.py
index 897d5cd0e98..3dd794c4630 100644
--- a/addons/stock/wizard/stock_change_product_qty.py
+++ b/addons/stock/wizard/stock_change_product_qty.py
@@ -28,10 +28,23 @@ class stock_change_product_qty(osv.osv_memory):
     _columns = {
         'product_id' : fields.many2one('product.product', 'Product'),
         'new_quantity': fields.float('Quantity', required=True, help='This quantity is expressed in the Default UoM of the product.'),
-        'prodlot_id': fields.many2one('stock.production.lot', 'Production Lot', domain="[('product_id','=',product_id)]"),
+        'prodlot_id': fields.many2one('stock.production.lot', 'Production Lot', required=True,domain="[('product_id','=',product_id)]"),
         'location_id': fields.many2one('stock.location', 'Location', required=True, domain="[('usage', '=', 'internal')]"),
     }
 
+    def fields_view_get(self, cr, uid, view_id=None, view_type='form', context=None, toolbar=False, submenu=False):
+        result = super(stock_change_product_qty, self).fields_view_get(cr, uid, view_id, view_type, context, toolbar, submenu)
+        product_id = context and context.get('active_id', False) or False
+        prod_obj = self.pool.get('product.product').browse(cr, uid, product_id, context=context)
+
+        if (context.get('active_model') == 'product.product') and prod_obj:
+            fields=result.get('fields',{})
+            if fields and (prod_obj.track_production == True) and (fields.get('prodlot_id')):
+                result['fields']['prodlot_id']['required'] =  True
+            else:
+                result['fields']['prodlot_id']['required'] =  False
+        return result
+
     def default_get(self, cr, uid, fields, context):
         """ To get default values for the object.
          @param self: The object pointer.