diff --git a/install_iso.md b/install_iso.md
index 561d2476..d47900cd 100644
--- a/install_iso.md
+++ b/install_iso.md
@@ -21,6 +21,9 @@ You can use any computer with **256MB RAM or more**.
 
 ## Installation steps
 
+
+<a class="btn btn-lg btn-default" href="https://build.yunohost.org">0. download your ISO image</a>
+
 <a class="btn btn-lg btn-default" href="/burn_or_copy_iso">1. Burn or copy ISO image</a>
 
 <a class="btn btn-lg btn-default" href="/boot_and_graphical_install">2. Boot & install</a>