diff --git a/erpnext/templates/pages/rfq.py b/erpnext/templates/pages/rfq.py
index abc2890..aaf4110 100644
--- a/erpnext/templates/pages/rfq.py
+++ b/erpnext/templates/pages/rfq.py
@@ -29,7 +29,7 @@
 def check_supplier_has_docname_access(supplier):
 	status = True
 	if frappe.form_dict.name not in frappe.db.sql_list("""select parent from `tabRequest for Quotation Supplier`
-		where supplier = '{supplier}'""".format(supplier=supplier)):
+		where supplier = %s""", (supplier,)):
 		status = False
 	return status