diff --git a/erpnext/selling/doctype/customer/customer.js b/erpnext/selling/doctype/customer/customer.js
index 92734cc..019e7dd 100644
--- a/erpnext/selling/doctype/customer/customer.js
+++ b/erpnext/selling/doctype/customer/customer.js
@@ -34,6 +34,12 @@
 			}
 		})
 	},
+	customer_primary_contact: function(frm){
+		if(!frm.doc.customer_primary_contact){
+			frm.set_value("mobile_no", "");
+			frm.set_value("email_id", "");
+		}
+	},
 	refresh: function(frm) {
 		if(frappe.defaults.get_default("cust_master_name")!="Naming Series") {
 			frm.toggle_display("naming_series", false);