diff --git a/en_US/installation/0-setup.dns.md b/en_US/installation/0-setup.dns.md
index 29322edb..e3389604 100644
--- a/en_US/installation/0-setup.dns.md
+++ b/en_US/installation/0-setup.dns.md
@@ -345,7 +345,7 @@ v=DMARC1; p=reject; sp=none; adkim=s; aspf=s; rua=mailto:dmarc@mydomain.com; ruf
 * `adkim` specifies alignment mode for DKIM. 2 options are available:
     * `r`: relax mode (`adkim=r`)
     * `s`: strict mode (`adkim=s`)
-* `aspf` specifies aligment mode for SPF. 2 options are available:
+* `aspf` specifies alignment mode for SPF. 2 options are available:
     * `r`: relax mode (`aspf=r`)
     * `s`: strict mode (`aspf=s`)
 * `p` specifies the policy for organizational domain. It tells the recipient
diff --git a/html/setup.dns.html b/html/setup.dns.html
index c6f0476c..879ad6c9 100644
--- a/html/setup.dns.html
+++ b/html/setup.dns.html
@@ -351,7 +351,7 @@ correct and up to date SPF and DKIM records published.</p>
 <li><code>s</code>: strict mode (<code>adkim=s</code>)</li>
 </ul>
 </li>
-<li><code>aspf</code> specifies aligment mode for SPF. 2 options are available:<ul>
+<li><code>aspf</code> specifies alignment mode for SPF. 2 options are available:<ul>
 <li><code>r</code>: relax mode (<code>aspf=r</code>)</li>
 <li><code>s</code>: strict mode (<code>aspf=s</code>)</li>
 </ul>