diff --git a/erpnext/hr/doctype/salary_slip/salary_slip.py b/erpnext/hr/doctype/salary_slip/salary_slip.py
index ba8cc02..53e6aa4 100644
--- a/erpnext/hr/doctype/salary_slip/salary_slip.py
+++ b/erpnext/hr/doctype/salary_slip/salary_slip.py
@@ -493,9 +493,9 @@
 		# Calculate total exemption declaration
 		exemption_amount = 0
 		if frappe.db.exists("Employee Tax Exemption Declaration", {"employee": self.employee,
-		"payroll_period": payroll_period.parent, "docstatus": 1}):
+		"payroll_period": payroll_period.name, "docstatus": 1}):
 			exemption_amount = frappe.db.get_value("Employee Tax Exemption Declaration",
-				{"employee": self.employee, "payroll_period": "2018", "docstatus": 1}, #fix period
+				{"employee": self.employee, "payroll_period": payroll_period.name, "docstatus": 1}, #fix period
 				"total_exemption_amount")
 		annual_earning = annual_earning - exemption_amount
 
diff --git a/erpnext/hr/utils.py b/erpnext/hr/utils.py
index 315368d..20fe666 100644
--- a/erpnext/hr/utils.py
+++ b/erpnext/hr/utils.py
@@ -236,7 +236,7 @@
 		return leave_period
 
 def get_payroll_period(from_date, to_date, company):
-	payroll_period = frappe.db.sql("""select pd.parent, pd.start_date, pd.end_date from
+	payroll_period = frappe.db.sql("""select pp.name, pd.start_date, pd.end_date from
 		`tabPayroll Period Date` pd join `tabPayroll Period` pp on
 		pd.parent=pp.name where pd.start_date<=%s and pd.end_date>= %s
 		and pp.company=%s""", (from_date, to_date, company), as_dict=1)