diff --git a/erpnext/selling/doctype/opportunity/opportunity.js b/erpnext/selling/doctype/opportunity/opportunity.js
index af31d395153..59acc10be49 100644
--- a/erpnext/selling/doctype/opportunity/opportunity.js
+++ b/erpnext/selling/doctype/opportunity/opportunity.js
@@ -35,8 +35,6 @@ erpnext.selling.Opportunity = frappe.ui.form.Controller.extend({
 			});
 		}
 
-		if(this.frm.doc.customer && !this.frm.doc.customer_name) cur_frm.cscript.customer(this.frm.doc);
-
 		this.setup_queries();
 	},
 
diff --git a/erpnext/selling/doctype/opportunity/opportunity.json b/erpnext/selling/doctype/opportunity/opportunity.json
index 17291ad13f5..92defc2acf4 100644
--- a/erpnext/selling/doctype/opportunity/opportunity.json
+++ b/erpnext/selling/doctype/opportunity/opportunity.json
@@ -47,6 +47,7 @@
    "in_filter": 1, 
    "in_list_view": 1, 
    "label": "Customer", 
+   "no_copy": 1, 
    "oldfieldname": "customer", 
    "oldfieldtype": "Link", 
    "options": "Customer", 
@@ -416,7 +417,7 @@
  "icon": "icon-info-sign", 
  "idx": 1, 
  "is_submittable": 1, 
- "modified": "2014-12-01 08:46:35.331148", 
+ "modified": "2014-12-19 10:49:20.695720", 
  "modified_by": "Administrator", 
  "module": "Selling", 
  "name": "Opportunity",