Update erpnext/selling/doctype/sales_common/sales_common.js
diff --git a/erpnext/selling/doctype/sales_common/sales_common.js b/erpnext/selling/doctype/sales_common/sales_common.js
index 5dcdb69..b257d6d 100644
--- a/erpnext/selling/doctype/sales_common/sales_common.js
+++ b/erpnext/selling/doctype/sales_common/sales_common.js
@@ -160,11 +160,12 @@
 				unhide_field(['price_list_currency', 'plc_conversion_rate']);
 				
 				if (pl_currency.length==1) {
+					set_multiple(cdt, cdn, {price_list_currency:pl_currency[0]});
 					if (pl_currency[0] == doc.currency) {
-						set_multiple(cdt, cdn, {price_list_currency:doc.currency, plc_conversion_rate:doc.conversion_rate});
+						set_multiple(cdt, cdn, {plc_conversion_rate:doc.conversion_rate});
 						hide_field(['price_list_currency', 'plc_conversion_rate']);
 					} else if (pl_currency[0] == r.message[1]) {
-						set_multiple(cdt, cdn, {price_list_currency:pl_currency[0], plc_conversion_rate:1})
+						set_multiple(cdt, cdn, {plc_conversion_rate:1})
 						hide_field(['price_list_currency', 'plc_conversion_rate']);
 					}					
 				}