diff --git a/erpnext/manufacturing/doctype/workstation/workstation.py b/erpnext/manufacturing/doctype/workstation/workstation.py
index 59e5318..76795e3 100644
--- a/erpnext/manufacturing/doctype/workstation/workstation.py
+++ b/erpnext/manufacturing/doctype/workstation/workstation.py
@@ -101,7 +101,7 @@
 def check_if_within_operating_hours(workstation, operation, from_datetime, to_datetime):
 	if from_datetime and to_datetime:
 		if not cint(
-			frappe.db.get_value("Manufacturing Settings", "None", "allow_production_on_holidays")
+			frappe.db.get_value("Manufacturing Settings", None, "allow_production_on_holidays")
 		):
 			check_workstation_for_holiday(workstation, from_datetime, to_datetime)