diff --git a/erpnext/selling/doctype/quotation/quotation.py b/erpnext/selling/doctype/quotation/quotation.py
index bad2d2b..4fa4515 100644
--- a/erpnext/selling/doctype/quotation/quotation.py
+++ b/erpnext/selling/doctype/quotation/quotation.py
@@ -127,7 +127,7 @@
 
 	@frappe.whitelist()
 	def declare_enquiry_lost(self, lost_reasons_list, competitors, detailed_reason=None):
-		if not self.is_fully_ordered() or self.is_partially_ordered():
+		if not (self.is_fully_ordered() or self.is_partially_ordered()):
 			get_lost_reasons = frappe.get_list("Quotation Lost Reason", fields=["name"])
 			lost_reasons_lst = [reason.get("name") for reason in get_lost_reasons]
 			frappe.db.set(self, "status", "Lost")