diff --git a/biscuit/core/templates/contact_form/contact_form.html b/biscuit/core/templates/contact_form/contact_form.html
index 2dca464ec551c599d77973869dff521f0666b814..7e0078ab33806513f6c3d75c8e7aa827206e98cb 100644
--- a/biscuit/core/templates/contact_form/contact_form.html
+++ b/biscuit/core/templates/contact_form/contact_form.html
@@ -10,6 +10,8 @@
  <form method="post">
   {% csrf_token %}
   {% bootstrap_form form %}
-  <input type="submit" value="Send" />
+  <button type="submit" class="btn btn-secondary">
+    {% blocktrans %}Send{% endblocktrans %}
+  </button>
  </form>
 {% endblock %}
diff --git a/biscuit/core/templates/registration/login.html b/biscuit/core/templates/registration/login.html
index fb5607531f3c6b7fea579e37b042e4f184967baa..2a1de1d1998c990881f1b8d1bdbd00990f58e6f4 100644
--- a/biscuit/core/templates/registration/login.html
+++ b/biscuit/core/templates/registration/login.html
@@ -1,6 +1,6 @@
 {# -*- engine:django -*- #}
 {% extends "core/base.html" %}
-{% load bootstrap4 %}
+{% load bootstrap4 i18n %}
 
 {% block content %}
  {% if next %}
@@ -17,7 +17,11 @@
  <form method="post" action="{% url 'login' %}">
   {% csrf_token %}
   {% bootstrap_form form %}
-  <input type="submit" value="Login" />
-  <input type="hidden" name="next" value="{{ next }}">
+  <button type="submit" class="btn btn-secondary">
+    {% blocktrans %}Login{% endblocktrans %}
+  </button>  
+  <button type="hidden" class="btn btn-secondary">
+    {{ next }}
+  </button>
  </form>
 {% endblock %}