diff --git a/addons/hr_payroll/wizard/hr_payroll_payslips_by_employees.py b/addons/hr_payroll/wizard/hr_payroll_payslips_by_employees.py
index 55375095025..ebb9bed26c1 100644
--- a/addons/hr_payroll/wizard/hr_payroll_payslips_by_employees.py
+++ b/addons/hr_payroll/wizard/hr_payroll_payslips_by_employees.py
@@ -42,7 +42,7 @@ class hr_payslip_employees(osv.osv_memory):
             context = {}
         data = self.read(cr, uid, ids, context=context)[0]
         if not data['employee_ids']:
-            raise osv.except_osv(_("Warning !"), _("You must select employee(s) to generate payslip"))
+            raise osv.except_osv(_("Warning !"), _("You must select employee(s) to generate payslip(s)"))
         for emp in emp_pool.browse(cr, uid, data['employee_ids'], context=context):
             slip_data = slip_pool.onchange_employee_id(cr, uid, [], time.strftime('%Y-%m-01'), str(datetime.now() + relativedelta.relativedelta(months=+1, day=1, days=-1))[:10], emp.id, contract_id=False, context=context)
             res = {