diff --git a/core/Resources/views/file_manager/info.html.twig b/core/Resources/views/file_manager/info.html.twig
index ab55b32..7ceb0a7 100644
--- a/core/Resources/views/file_manager/info.html.twig
+++ b/core/Resources/views/file_manager/info.html.twig
@@ -117,7 +117,7 @@
                     </div>
                 {% endif %}
 
-                {% if splInfo.extension in ['jpeg', 'jpg', 'gif', 'png', 'svg'] %}
+                {% if splInfo.extension|lower in ['jpeg', 'jpg', 'gif', 'png', 'svg'] %}
                     <div class="tab-pane {% if tab == 'preview' %}show active{% endif %}" id="tab-fm-preview">
                         <div class="card">
                             <div class="card-img-top bg-tiles text-center">