diff --git a/addons/hr_payroll/hr_payroll.py b/addons/hr_payroll/hr_payroll.py
index b3962cef824..b15cb8ff03a 100644
--- a/addons/hr_payroll/hr_payroll.py
+++ b/addons/hr_payroll/hr_payroll.py
@@ -510,7 +510,7 @@ class hr_payslip(osv.osv):
         inputs = {}
         for input_line in payslip.input_line_ids:
             inputs[input_line.code] = input_line
-        localdict = {'heads': {}, 'payslip': payslip, 'worked_days': worked_days, 'inputs': inputs}
+        localdict = {'categories': {}, 'payslip': payslip, 'worked_days': worked_days, 'inputs': inputs}
         #get the ids of the structures on the contracts and their parent id as well
         structure_ids = self.pool.get('hr.contract').get_all_structures(cr, uid, contract_ids, context=context)
         #get the rules of the structure and thier children