diff --git a/en_US/howto/letsencrypt.md b/en_US/howto/letsencrypt.md
index d774cab6..f8465bf5 100644
--- a/en_US/howto/letsencrypt.md
+++ b/en_US/howto/letsencrypt.md
@@ -168,7 +168,7 @@ Directory `/etc/letsencrypt/live/` and `/etc/letsencrypt/archive` are owned by
 root user and group, with permission 0700 (set by `certbot` program) by
 default, it means other users can not access them -- including the daemon users
 used to run network services like Postfix/Dovecot/OpenLDAP/MariaDB/PostgreSQL.
-It's necessary to set the permission to 0644 for other applications to access them.
+It's necessary to set the permission to 0755 for other applications to access them.
 
 ```
 chmod 0755 /etc/letsencrypt/{live,archive}
diff --git a/html/letsencrypt.html b/html/letsencrypt.html
index 8e214887..c6149cf2 100644
--- a/html/letsencrypt.html
+++ b/html/letsencrypt.html
@@ -205,7 +205,7 @@ instead of <code>mail.mydomain.com</code> in this sample path).</p>
 root user and group, with permission 0700 (set by <code>certbot</code> program) by
 default, it means other users can not access them -- including the daemon users
 used to run network services like Postfix/Dovecot/OpenLDAP/MariaDB/PostgreSQL.
-It's necessary to set the permission to 0644 for other applications to access them.</p>
+It's necessary to set the permission to 0755 for other applications to access them.</p>
 <pre><code>chmod 0755 /etc/letsencrypt/{live,archive}
 </code></pre>