diff --git a/templates/posts/new.html.tera b/templates/posts/new.html.tera
index da9492b4..b7f3d6a2 100644
--- a/templates/posts/new.html.tera
+++ b/templates/posts/new.html.tera
@@ -37,9 +37,9 @@
 
     <label for="cover">{{ "Illustration" | _ }}<small>{{ "Optional" | _ }}</small></label>
     <select id="cover" name="cover">
-        <option value="none" {% if not form.cover %}selected{% endif %}>{{ "None" | _ }}</option>
+        <option value="none" {% if form is undefined or form.cover is undefined %}selected{% endif %}>{{ "None" | _ }}</option>
         {% for media in medias %}
-            <option value="{{ media.id }}" {% if form.cover == media.id %}selected{% endif %}>
+            <option value="{{ media.id }}" {% if form is defined and form.cover is defined and form.cover == media.id %}selected{% endif %}>
                 {{ media.alt_text | default(value=media.content_warning) }}
             </option>
         {% endfor %}