diff --git a/erpnext/crm/utils.py b/erpnext/crm/utils.py
index 38bf79e..95b19ec 100644
--- a/erpnext/crm/utils.py
+++ b/erpnext/crm/utils.py
@@ -19,6 +19,5 @@
 					mobile_no = primary_mobile_nos[0]
 
 			lead = frappe.get_doc("Lead", contact_lead)
-			lead.phone = phone
-			lead.mobile_no = mobile_no
-			lead.save()
+			lead.db_set("phone", phone)
+			lead.db_set("mobile_no", mobile_no)