diff --git a/frappe/public/js/frappe/form/sidebar/assign_to.js b/frappe/public/js/frappe/form/sidebar/assign_to.js
index 1d4adf1edb..2f8c6469b3 100644
--- a/frappe/public/js/frappe/form/sidebar/assign_to.js
+++ b/frappe/public/js/frappe/form/sidebar/assign_to.js
@@ -140,7 +140,7 @@ frappe.ui.form.AssignToDialog = Class.extend({
 				{ fieldtype: 'Section Break' },
 				{ fieldtype: 'Column Break' },
 				{ fieldtype: 'Date', fieldname: 'date', label: __("Complete By") },
-				{ fieldtype: 'Check', fieldname: 'notify', label: __("Notify by Email") },
+				{ fieldtype: 'Check', fieldname: 'notify', label: __("Notify by Email"), default: 1},
 				{ fieldtype: 'Column Break' },
 				{ fieldtype: 'Select', fieldname: 'priority', label: __("Priority"),
 					options: [