diff --git a/frappe/public/js/legacy/form.js b/frappe/public/js/legacy/form.js
index debbacabc3..d9dceda238 100644
--- a/frappe/public/js/legacy/form.js
+++ b/frappe/public/js/legacy/form.js
@@ -564,7 +564,7 @@ _f.Frm.prototype.reload_doc = function() {
 
 var validated;
 _f.Frm.prototype.save = function(save_action, callback, btn, on_error) {
-	$(btn).prop("disabled", true);
+	btn && $(btn).prop("disabled", true);
 	$(document.activeElement).blur();
 
 	// let any pending js process finish