diff --git a/erpnext/hr/doctype/attendance/attendance.py b/erpnext/hr/doctype/attendance/attendance.py
index 2705f2c..72fa47d 100644
--- a/erpnext/hr/doctype/attendance/attendance.py
+++ b/erpnext/hr/doctype/attendance/attendance.py
@@ -37,7 +37,7 @@
 	def validate_attendance_date(self):
 		if getdate(self.attendance_date) > getdate(nowdate()):
 			frappe.throw(_("Attendance can not be marked for future dates"))
-		elif getdate(self.att_date) < frappe.db.get_value("Employee", self.employee, "date_of_joining"):
+		elif getdate(self.attendance_date) < frappe.db.get_value("Employee", self.employee, "date_of_joining"):
 			frappe.throw(_("Attendance date can not be less than employee's joining date"))
 
 	def validate_employee(self):