diff --git a/frappe/public/js/frappe/form/toolbar.js b/frappe/public/js/frappe/form/toolbar.js
index 4782a7c9ca..67a04ce13e 100644
--- a/frappe/public/js/frappe/form/toolbar.js
+++ b/frappe/public/js/frappe/form/toolbar.js
@@ -30,7 +30,8 @@ frappe.ui.form.Toolbar = Class.extend({
 	},
 	set_title: function() {
 		if(this.frm.meta.title_field) {
-			var title = strip_html((this.frm.doc[this.frm.meta.title_field] || "").trim() || this.frm.docname);
+			let title_field = (this.frm.doc[this.frm.meta.title_field] || "").toString().trim();
+			var title = strip_html(title_field || this.frm.docname);
 			if(this.frm.doc.__islocal || title === this.frm.docname || this.frm.meta.autoname==="hash") {
 				this.page.set_title_sub("");
 			} else {
diff --git a/frappe/public/js/frappe/list/list_view.js b/frappe/public/js/frappe/list/list_view.js
index bb79b3441f..6912065e1c 100644
--- a/frappe/public/js/frappe/list/list_view.js
+++ b/frappe/public/js/frappe/list/list_view.js
@@ -719,7 +719,7 @@ frappe.views.ListView = class ListView extends frappe.views.BaseList {
 		let user = frappe.session.user;
 		let subject_field = this.columns[0].df;
 		let value = doc[subject_field.fieldname] || doc.name;
-		let subject = strip_html(value);
+		let subject = strip_html(value.toString());
 		let escaped_subject = frappe.utils.escape_html(subject);
 
 		const liked_by = JSON.parse(doc._liked_by || '[]');