diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
index 7a273c7..8d65101 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
@@ -447,10 +447,10 @@
 		this.frm.refresh_field("outstanding_amount");
 		this.frm.refresh_field("paid_amount");
 		this.frm.refresh_field("base_paid_amount");
-	},
+	}
 
 	currency() {
-		this._super();
+		super.currency();
 		$.each(cur_frm.doc.timesheets, function(i, d) {
 			let row = frappe.get_doc(d.doctype, d.name)
 			set_timesheet_detail_rate(row.doctype, row.name, cur_frm.doc.currency, row.timesheet_detail)