diff --git a/prosopopee/themes/exposure/templates/index.html b/prosopopee/themes/exposure/templates/index.html
index 4447627..af7615f 100644
--- a/prosopopee/themes/exposure/templates/index.html
+++ b/prosopopee/themes/exposure/templates/index.html
@@ -26,6 +26,9 @@
 {% block content %}
 <div class="galleries-grid">
   {% for galleries_line in galleries|reverse|batch(3)|reverse %}
+  {% if loop.index is divisibleby 3 or loop.index is divisibleby 2 %}
+  {% set no_big_gallery_cover = true %}
+  {% endif %}
   <div class="galleries-line covers-{{ galleries_line|length }}">
     {% for gallery in galleries_line|reverse %}<!-- comment tricks against space between inline-block
     --><div class="gallery-square">
@@ -49,7 +52,11 @@
       {% else %}
       {% set cover = Image(gallery.cover) %}
       {{ cover.copy() }}
+      {% if no_big_gallery_cover %}
       <div class="gallery-cover" style="background-image: url('{{ cover.generate_thumbnail("x900") }}'), url('{{ cover.generate_thumbnail("x150") }}');"></div>
+      {% else %}
+      <div class="gallery-cover" style="background-image: url('{{ cover.generate_thumbnail("x1366") }}'), url('{{ cover.generate_thumbnail("x900") }}');"></div>
+      {% endif %}
       {% endif %}
     </div><!-- comment tricks against space between inline-block
     -->{% endfor %}
diff --git a/prosopopee/themes/exposure/templates/sections/bordered-picture.html b/prosopopee/themes/exposure/templates/sections/bordered-picture.html
index d1ab5cf..f642b47 100644
--- a/prosopopee/themes/exposure/templates/sections/bordered-picture.html
+++ b/prosopopee/themes/exposure/templates/sections/bordered-picture.html
@@ -36,7 +36,7 @@
            <source srcset="{{ image.generate_thumbnail("x800") }}" media="(max-width: 800px)"/>
            <source srcset="{{ image.generate_thumbnail("x1366") }}" media="(max-width: 1366px)"/>
            <source srcset="{{ image.generate_thumbnail("x1920") }}" media="(max-width: 1920px)"/>
-           <img src="{{ image }}" data-original="{{ image }}" alt=""/>
+           <img src="{{ image.generate_thumbnail("x1920") }}" data-original="{{ image }}" alt=""/>
          </picture>
         {% if caption %}
         <div class="caption__overlay">