diff --git a/erpnext/manufacturing/doctype/workstation/workstation.py b/erpnext/manufacturing/doctype/workstation/workstation.py
index 326a8b37efc..510e69cd272 100644
--- a/erpnext/manufacturing/doctype/workstation/workstation.py
+++ b/erpnext/manufacturing/doctype/workstation/workstation.py
@@ -79,9 +79,6 @@ class Workstation(Document):
 				self.total_working_hours += row.hours
 
 	def validate_working_hours(self, row):
-		if not (row.start_time and row.end_time):
-			frappe.throw(_("Row #{0}: Start Time and End Time are required").format(row.idx))
-
 		if get_time(row.start_time) >= get_time(row.end_time):
 			frappe.throw(_("Row #{0}: Start Time must be before End Time").format(row.idx))