diff --git a/_includes/masthead.html b/_includes/masthead.html
index c398d654b..27fa93adb 100644
--- a/_includes/masthead.html
+++ b/_includes/masthead.html
@@ -31,7 +31,7 @@
             {% assign langless_url = "" %}
           {% endif %}
           <li class="masthead__menu-item"><a href="{{ site.url }}/{{ langless_url }}">English</a></li>
-          <li class="masthead__menu-item"><a href="{{ site.url }}/es_ES/{{ langless_url }}">Español</a></li>
+          <li class="masthead__menu-item"><a href="{{ site.url }}/es_MX/{{ langless_url }}">Español</a></li>
           <li class="masthead__menu-item"><a href="{{ site.url }}/de_DE/{{ langless_url }}">Deutsch</a></li>
           <li class="masthead__menu-item"><a href="{{ site.url }}/fr_FR/{{ langless_url }}">Français</a></li>
           <li class="masthead__menu-item"><a href="{{ site.url }}/it_IT/{{ langless_url }}">Italiano</a></li>