diff --git a/mrp_operations_extension/models/mrp_production.py b/mrp_operations_extension/models/mrp_production.py
index 81667d8b7..ab3ee252e 100644
--- a/mrp_operations_extension/models/mrp_production.py
+++ b/mrp_operations_extension/models/mrp_production.py
@@ -17,6 +17,7 @@
 ##############################################################################
 
 from openerp import models, fields, api, exceptions, _
+import math
 
 
 class MrpProduction(models.Model):
@@ -56,6 +57,12 @@ class MrpProduction(models.Model):
 
     def _get_workorder_in_product_lines(
             self, workcenter_lines, product_lines, properties=None):
+        for workorder in workcenter_lines:
+            wc = workorder.routing_wc_line
+            cycle = wc.cycle_nbr and int(math.ceil(self.product_qty /
+                                                   wc.cycle_nbr)) or 0
+            workorder.cycle = cycle
+            workorder.hour = wc.hour_nbr * cycle
         for p_line in product_lines:
             for bom_line in self.bom_id.bom_line_ids:
                 if bom_line.product_id.id == p_line.product_id.id: