diff --git a/selling/doctype/sales_order/sales_order.js b/selling/doctype/sales_order/sales_order.js
index 1285c84..f720cfa 100644
--- a/selling/doctype/sales_order/sales_order.js
+++ b/selling/doctype/sales_order/sales_order.js
@@ -92,6 +92,16 @@
 			cur_frm.add_custom_button('Unstop', cur_frm.cscript['Unstop Sales Order']);
 		}
 	}
+	
+	cur_frm.cscript.order_type(doc);
+}
+
+cur_frm.cscript.order_type = function(doc) {
+	if(doc.order_type == "Sales") {
+		cur_frm.toggle_reqd("delivery_date", 1);
+	} else {
+		cur_frm.toggle_reqd("delivery_date", 0);
+	}
 }
 
 //customer