diff --git a/_includes/header/header-en.html b/_includes/header/header-en.html
index fc8cedac..4d99a0f0 100644
--- a/_includes/header/header-en.html
+++ b/_includes/header/header-en.html
@@ -10,40 +10,40 @@
           <li><a href="/" id="home-menu"{% if page.menu == 'home' %} class="active"{% endif %}>Home</a></li>
           <li>
               <ul id="getting-started-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/starter/installing.html"{% if page.menu == 'starter' %} class="active"{% endif %}>Getting started</a>
+                  <li><a href="{{site.baseur}}/{{ page.lang }}/starter/installing.html"{% if page.menu == 'starter' %} class="active"{% endif %}>Getting started</a>
                       <ul>
                           <li>
-                            <a href="/{{ page.lang }}/starter/installing.html">
+                            <a href="{{site.baseur}}/{{ page.lang }}/starter/installing.html">
                               Installing
                             </a>
                           </li>
                           <li>
-                            <a href="/{{ page.lang }}/starter/hello-world.html">
+                            <a href="{{site.baseur}}/{{ page.lang }}/starter/hello-world.html">
                               Hello world
                             </a>
                           </li>
                           <li>
-                          <a href="/{{ page.lang }}/starter/generator.html">
+                          <a href="{{site.baseur}}/{{ page.lang }}/starter/generator.html">
                             Express generator
                           </a>
                           </li>
                           <li>
-                            <a href="/{{ page.lang }}/starter/basic-routing.html">
+                            <a href="{{site.baseur}}/{{ page.lang }}/starter/basic-routing.html">
                               Basic routing
                             </a>
                           </li>
                           <li>
-                            <a href="/{{ page.lang }}/starter/static-files.html">
+                            <a href="{{site.baseur}}/{{ page.lang }}/starter/static-files.html">
                               Static files
                             </a>
                           </li>
                           <li>
-                            <a href="/{{ page.lang }}/starter/examples.html">
+                            <a href="{{site.baseur}}/{{ page.lang }}/starter/examples.html">
                               More examples
                             </a>
                           </li>
                           <li>
-                            <a href="/{{ page.lang }}/starter/faq.html">
+                            <a href="{{site.baseur}}/{{ page.lang }}/starter/faq.html">
                               FAQ
                             </a>
                           </li>
@@ -53,29 +53,29 @@
           </li>
           <li>
               <ul id="guide-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/guide/routing.html"{% if page.menu == 'guide' %} class="active"{% endif %}>Guide</a>
+                  <li><a href="{{site.baseur}}/{{ page.lang }}/guide/routing.html"{% if page.menu == 'guide' %} class="active"{% endif %}>Guide</a>
                       <ul>
-                          <li><a href="/{{ page.lang }}/guide/routing.html">Routing</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/guide/routing.html">Routing</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/guide/writing-middleware.html">Writing middleware</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/guide/writing-middleware.html">Writing middleware</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/guide/using-middleware.html">Using middleware</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/guide/using-middleware.html">Using middleware</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/guide/overriding-express-api.html">Overriding the Express API</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/guide/overriding-express-api.html">Overriding the Express API</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/guide/using-template-engines.html">Using template engines</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/guide/using-template-engines.html">Using template engines</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/guide/error-handling.html">Error handling</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/guide/error-handling.html">Error handling</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/guide/debugging.html">Debugging</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/guide/debugging.html">Debugging</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/guide/behind-proxies.html">Express behind proxies</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/guide/behind-proxies.html">Express behind proxies</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/guide/migrating-4.html">Moving to Express 4</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/guide/migrating-4.html">Moving to Express 4</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/guide/migrating-5.html">Moving to Express 5</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/guide/migrating-5.html">Moving to Express 5</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/guide/database-integration.html">Database integration</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/guide/database-integration.html">Database integration</a>
                           </li>
                       </ul>
                   </li>
@@ -83,13 +83,13 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API reference</a>
+                  <li><a href="{{site.baseur}}/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API reference</a>
                       <ul>
-                          <li><a href="/{{ page.lang }}/5x/api.html">5.x (beta)</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/5x/api.html">5.x (beta)</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/4x/api.html">4.x</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/4x/api.html">4.x</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/3x/api.html">3.x (deprecated)</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/3x/api.html">3.x (deprecated)</a>
                           </li>
                           <li><a href="/2x/">2.x (deprecated)</a>
                           </li>
@@ -99,17 +99,17 @@
           </li>
           <li>
               <ul id="advanced-topics-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/advanced/developing-template-engines.html"{% if page.menu == 'advanced' %} class="active"{% endif %}>Advanced topics</a>
+                  <li><a href="{{site.baseur}}/{{ page.lang }}/advanced/developing-template-engines.html"{% if page.menu == 'advanced' %} class="active"{% endif %}>Advanced topics</a>
                       <ul>
-                          <li><a href="/{{ page.lang }}/advanced/developing-template-engines.html">Building template engines</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/advanced/developing-template-engines.html">Building template engines</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/advanced/security-updates.html">Security updates</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/advanced/security-updates.html">Security updates</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/advanced/best-practice-security.html">Security best practices</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/advanced/best-practice-security.html">Security best practices</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/advanced/best-practice-performance.html">Performance best practices</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/advanced/best-practice-performance.html">Performance best practices</a>
                           </li>
-                          <li><a href="/{{ page.lang }}/advanced/healthcheck-graceful-shutdown.html">Health checks &  shutdown</a>
+                          <li><a href="{{site.baseur}}/{{ page.lang }}/advanced/healthcheck-graceful-shutdown.html">Health checks &  shutdown</a>
                           </li>
                       </ul>
                   </li>
@@ -117,25 +117,25 @@
           </li>
           <li>
               <ul id="resources-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/resources/glossary.html"{% if page.menu == 'resources' %} class="active"{% endif %}>Resources</a>
+                  <li><a href="{{site.baseur}}/{{ page.lang }}/resources/glossary.html"{% if page.menu == 'resources' %} class="active"{% endif %}>Resources</a>
                       <ul>
                           <li>
-                            <a href="/{{ page.lang }}/resources/community.html">Community</a>
+                            <a href="{{site.baseur}}/{{ page.lang }}/resources/community.html">Community</a>
                           </li>
                           <li>
-                            <a href="/{{ page.lang }}/resources/glossary.html">Glossary</a>
+                            <a href="{{site.baseur}}/{{ page.lang }}/resources/glossary.html">Glossary</a>
                           </li>
                           <li>
-                            <a href="/{{ page.lang }}/resources/middleware.html">Middleware</a>
+                            <a href="{{site.baseur}}/{{ page.lang }}/resources/middleware.html">Middleware</a>
                           </li>
                           <li>
-                            <a href="/{{ page.lang }}/resources/utils.html">Utility modules</a>
+                            <a href="{{site.baseur}}/{{ page.lang }}/resources/utils.html">Utility modules</a>
                           </li>
                           <li>
-                            <a href="/{{ page.lang }}/resources/contributing.html">Contributing to Express</a>
+                            <a href="{{site.baseur}}/{{ page.lang }}/resources/contributing.html">Contributing to Express</a>
                           </li>
                           <li>
-                            <a href="/{{ page.lang }}/changelog/4x.html">Release Change Log</a>
+                            <a href="{{site.baseur}}/{{ page.lang }}/changelog/4x.html">Release Change Log</a>
                           </li>
                       </ul>
                   </li>