diff --git a/biscuit/apps/alsijil/templates/alsijil/group_week.html b/biscuit/apps/alsijil/templates/alsijil/group_week.html
index 048bc6537551894a98eac1c86966127f7e74eb53..5edeec5976088075dfea04fe37ef6dace76e7311 100644
--- a/biscuit/apps/alsijil/templates/alsijil/group_week.html
+++ b/biscuit/apps/alsijil/templates/alsijil/group_week.html
@@ -11,12 +11,12 @@
       <ul id="timetable_select_form">
         {{ select_form.as_ul }}
       </ul>
-      <button type="submit" class="btn btn-secondary">
+      <button type="submit" class="btn btn-dark">
         {% blocktrans %}Select{% endblocktrans %}
       </button>
     </form>
     {% if group %}
-      <a class="btn btn-secondary" href="{% url 'full_register_group' group.id %}">
+      <a class="btn btn-dark" href="{% url 'full_register_group' group.id %}">
         {% fa 'print' %}
       </a>
     {% endif %}
diff --git a/biscuit/apps/alsijil/templates/alsijil/lesson.html b/biscuit/apps/alsijil/templates/alsijil/lesson.html
index 818a302d249a66b33931a452020d5acd4f1339f7..c03335bc7034dee9d3de09dfe7ced2c015b3dd12 100644
--- a/biscuit/apps/alsijil/templates/alsijil/lesson.html
+++ b/biscuit/apps/alsijil/templates/alsijil/lesson.html
@@ -77,7 +77,7 @@
         </table>
       </div>
     </div>
-    <button type="submit" class="btn btn-secondary">
+    <button type="submit" class="btn btn-dark">
       {% blocktrans %}Save{% endblocktrans %}
     </button>
   </form>