diff --git a/6-data-storage/01-cookie/cookie.js b/6-data-storage/01-cookie/cookie.js
index cd3e17c0..653ea5b7 100644
--- a/6-data-storage/01-cookie/cookie.js
+++ b/6-data-storage/01-cookie/cookie.js
@@ -1,6 +1,6 @@
 function getCookie(name) {
   let matches = document.cookie.match(new RegExp(
-    "(?:^|; )" + name.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g, '\\$1') + "=([^;]*)"
+    "(?:^|; )" + name.replace(/([.$?*|{}()[\]\\/+^])/g, '\\$1') + "=([^;]*)"
   ));
   return matches ? decodeURIComponent(matches[1]) : undefined;
 }