diff --git a/prosopopee/templates/index.html b/prosopopee/templates/index.html
index 03e29c1..a39219d 100644
--- a/prosopopee/templates/index.html
+++ b/prosopopee/templates/index.html
@@ -30,8 +30,7 @@
               {% if gallery.date %}<div class="gallery-datetime">{{ gallery.date.strftime("%d %B %Y") }}</div>{% endif %}
             </div>
           </a>
-          {{ helpers.copy_image(gallery.cover) }}
-          <div class="gallery-cover" style="background-image: url('{{ gallery.cover }}');"></div>
+          <div class="gallery-cover" style="background-image: url('{{ helpers.generate_thumbnail(gallery.cover, "x900") }}');"></div>
         </div><!-- comment tricks against space between inline-block
         -->{% endfor %}
       </div>