diff --git a/en_US/howto/allow.user.to.send.email.without.authentication.md b/en_US/howto/allow.user.to.send.email.without.authentication.md
index 0995254d..118dbfae 100644
--- a/en_US/howto/allow.user.to.send.email.without.authentication.md
+++ b/en_US/howto/allow.user.to.send.email.without.authentication.md
@@ -57,7 +57,7 @@ ALLOWED_FORGED_SENDERS = ['user@example.com']
 ```
 
 * To bypass sender IP address or network, for example, `192.168.0.1` and
-  `192.168.1.0/24', please add setting in `/opt/iredapd/settings.py` like below:
+  `192.168.1.0/24`, please add setting in `/opt/iredapd/settings.py` like below:
 
 ```
 MYNETWORKS = ['192.168.0.1', '192.168.1.0/24']
diff --git a/html/allow.user.to.send.email.without.authentication.html b/html/allow.user.to.send.email.without.authentication.html
index 671a8f89..0f0d31f8 100644
--- a/html/allow.user.to.send.email.without.authentication.html
+++ b/html/allow.user.to.send.email.without.authentication.html
@@ -66,7 +66,7 @@ device like printer, fax, we can also its IP address directly.</p>
 
 <ul>
 <li>To bypass sender IP address or network, for example, <code>192.168.0.1</code> and
-  <code>192.168.1.0/24', please add setting in</code>/opt/iredapd/settings.py` like below:</li>
+  <code>192.168.1.0/24</code>, please add setting in <code>/opt/iredapd/settings.py</code> like below:</li>
 </ul>
 <pre><code>MYNETWORKS = ['192.168.0.1', '192.168.1.0/24']
 </code></pre>