diff --git a/js/send-wp-mail.js b/js/send-wp-mail.js
index c174191..da3ad88 100644
--- a/js/send-wp-mail.js
+++ b/js/send-wp-mail.js
@@ -1,5 +1,5 @@
-jQuery( document ).ready( function( $ ) {
-	$("#swpm-user-list").change( function() {
+jQuery( function( $ ) {
+	$("#swpm-user-list").on( 'change', function() {
 		$recipients = $("#swpm-recipient-emails");
 		if ( $recipients.val() == '' ) {
 			$recipients.val( $(this).find("option:selected").attr("value") );