diff --git a/templates/main.js b/templates/main.js
index 72ca66c8..6e6f6b1a 100755
--- a/templates/main.js
+++ b/templates/main.js
@@ -231,11 +231,12 @@ function init_stylechooser() {
 }
 
 function getCookie(cookie_name) {
-	var results = document.cookie.match('(^|;) ?' + cookie_name + '=([^;]*)(;|$)');
-	if (results)
-		return (unescape(results[2]));
-	else
+	let results = document.cookie.match('(^|;) ?' + cookie_name + '=([^;]*)(;|$)');
+	if (results) {
+		return unescape(results[2]);
+	} else {
 		return null;
+	}
 }
 
 {% endraw %}