diff --git a/erpnext/selling/doctype/customer/customer.py b/erpnext/selling/doctype/customer/customer.py
index 73ab7e6..9fd37ad 100644
--- a/erpnext/selling/doctype/customer/customer.py
+++ b/erpnext/selling/doctype/customer/customer.py
@@ -258,7 +258,10 @@
 	target_doc.run_method("set_other_charges")
 	target_doc.run_method("calculate_taxes_and_totals")
 
-	target_doc.selling_price_list = frappe.get_doc("Customer",source_name).default_price_list
+	price_list = frappe.get_value("Customer",source_name, 'default_price_list')
+	if price_list:
+		target_doc.selling_price_list = price_list
+
 	return target_doc
 
 @frappe.whitelist()