diff --git a/addons/hr_evaluation/hr_evaluation.py b/addons/hr_evaluation/hr_evaluation.py
index 752028be527..041ec2d1fd8 100644
--- a/addons/hr_evaluation/hr_evaluation.py
+++ b/addons/hr_evaluation/hr_evaluation.py
@@ -115,12 +115,11 @@ class hr_employee(osv.osv):
         return True
 
     def onchange_evaluation_plan_id(self, cr, uid, ids, evaluation_plan_id, evaluation_date, context=None):
-        evaluation_date = evaluation_date or False
-        evaluation_plan_obj=self.pool.get('hr_evaluation.plan')
-        obj_evaluation = self.pool.get('hr_evaluation.evaluation')
         if context is None:
             context = {}
         if evaluation_plan_id:
+            evaluation_plan_obj=self.pool.get('hr_evaluation.plan')
+            obj_evaluation = self.pool.get('hr_evaluation.evaluation')
             flag = False
             evaluation_plan =  evaluation_plan_obj.browse(cr, uid, [evaluation_plan_id], context=context)[0]
             if not evaluation_date:
@@ -192,11 +191,11 @@ class hr_evaluation(osv.osv):
         return res
 
     def onchange_employee_id(self, cr, uid, ids, employee_id, context=None):
-        employee_obj=self.pool.get('hr.employee')
         if context is None:
             context = {}
-        evaluation_plan_id=''
+        evaluation_plan_id=False
         if employee_id:
+            employee_obj=self.pool.get('hr.employee')
             for employee in employee_obj.browse(cr, uid, [employee_id], context=context):
                 if employee and employee.evaluation_plan_id and employee.evaluation_plan_id.id:
                     evaluation_plan_id=employee.evaluation_plan_id.id
diff --git a/addons/hr_recruitment/hr_recruitment.py b/addons/hr_recruitment/hr_recruitment.py
index fbb1287afb4..e589a81bde7 100644
--- a/addons/hr_recruitment/hr_recruitment.py
+++ b/addons/hr_recruitment/hr_recruitment.py
@@ -181,15 +181,15 @@ class hr_applicant(crm.crm_case, osv.osv):
     }
 
     def onchange_job(self,cr, uid, ids, job, context=None):
-        job_obj = self.pool.get('hr.job')
         if context is None:
             context = {}
         result = {}
 
         if job:
+            job_obj = self.pool.get('hr.job')
             result['department_id'] = job_obj.browse(cr, uid, job, context=context).department_id.id
             return {'value': result}
-        return {'value': {'department_id': []}}
+        return {'value': {'department_id': False}}
 
     def stage_previous(self, cr, uid, ids, context=None):
         """This function computes previous stage for case from its current stage