diff --git a/erpnext/education/doctype/student/student.py b/erpnext/education/doctype/student/student.py
index 99c4c0e..d7d35ca 100644
--- a/erpnext/education/doctype/student/student.py
+++ b/erpnext/education/doctype/student/student.py
@@ -22,6 +22,10 @@
 			self.update_student_name_in_linked_doctype()
 
 	def validate_dates(self):
+		for sibling in self.siblings:
+			if sibling.date_of_birth and getdate(sibling.date_of_birth) >= getdate(today()):
+				frappe.throw(_("Sibling Date of Birth cannot be greater than today at row #{0} ").format(sibling.idx))
+				
 		if self.date_of_birth and getdate(self.date_of_birth) >= getdate(today()):
 			frappe.throw(_("Date of Birth cannot be greater than today."))