diff --git a/docs/1.0/getting-started/flask-deploy-on-heroku.html b/docs/1.0/getting-started/flask-deploy-on-heroku.html
index 7d93bdd..6e0668b 100644
--- a/docs/1.0/getting-started/flask-deploy-on-heroku.html
+++ b/docs/1.0/getting-started/flask-deploy-on-heroku.html
@@ -760,7 +760,7 @@ Heroku is a cloud-based, fully-managed platform as a service (Paas) for building
 
 <ul>
   <li><a href="https://github.com/app-generator/boilerplate-code-flask/blob/master/runtime.txt">runtime.txt</a> - specify the Python version used by Heroku during the build and deploy</li>
-  <li><a href="https://github.com/app-generator/boilerplate-code-flask/blob/master/Procfile">Procfile</a> - configuration file that informs Heroku where to look for the <a href="/what-is/wsgi/">WSGI</a> interface</li>
+  <li><a href="https://github.com/app-generator/boilerplate-code-flask/blob/master/Procfile">Procfile</a> - configuration file that informs Heroku where to look for the <a href="https://docs.appseed.us/what-is/wsgi/">WSGI</a> interface</li>
   <li><a href="https://github.com/app-generator/boilerplate-code-flask/blob/master/requirements.txt">requirements.txt</a> - must contain the <code class="highlighter-rouge">gunicorn</code> module</li>
 </ul>