diff --git a/selling/sales_common.js b/selling/sales_common.js
index ee55dfa..d6c8fdd 100644
--- a/selling/sales_common.js
+++ b/selling/sales_common.js
@@ -95,7 +95,7 @@
 	refresh: function() {
 		this._super();
 		this.frm.toggle_display("customer_name", 
-			(this.customer_name && this.frm.doc.customer_name!==this.frm.doc.customer));
+			(this.frm.doc.customer_name && this.frm.doc.customer_name!==this.frm.doc.customer));
 		if(this.frm.fields_dict.packing_details) {
 			var packing_list_exists = this.frm.get_doclist({parentfield: "packing_details"}).length;
 			this.frm.toggle_display("packing_list", packing_list_exists ? true : false);