diff --git a/admin_interface/templates/admin/base_site.html b/admin_interface/templates/admin/base_site.html
index 056f28c..7ac9fae 100644
--- a/admin_interface/templates/admin/base_site.html
+++ b/admin_interface/templates/admin/base_site.html
@@ -39,7 +39,7 @@ https://github.com/fabiocaccamo/django-admin-interface
 {% get_admin_interface_version as version %}
 {# https://github.com/elky/django-flat-responsive#important-note #}
 <meta name="viewport" content="user-scalable=no, width=device-width, initial-scale=1.0, maximum-scale=1.0">
-<link rel="stylesheet" type="text/css" href="{% static 'admin/css/responsive.css' %}?v={{ version }}" />
+<link rel="stylesheet" href="{% static 'admin/css/responsive.css' %}?v={{ version }}">
 {% include "admin_interface/favicon.html" %}
 {% include "admin_interface/related-modal.html" %}
 {% endblock %}
@@ -51,9 +51,9 @@ https://github.com/fabiocaccamo/django-admin-interface
 <h1 id="site-name">
     {% if theme.logo_visible %}
         {% if theme.logo %}
-        <img class="logo" style="display:none;" src="{{ theme.logo.url }}" {% if theme.logo.width %}width="{{ theme.logo.width }}"{% endif %} {% if theme.logo.height %}height="{{ theme.logo.height }}"{% endif %} />
+        <img class="logo" style="display:none;" src="{{ theme.logo.url }}" {% if theme.logo.width %}width="{{ theme.logo.width }}"{% endif %} {% if theme.logo.height %}height="{{ theme.logo.height }}"{% endif %}>
         {% else %}
-        <img class="logo default" style="display:none;" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" width="104" height="36" />
+        <img class="logo default" style="display:none;" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" width="104" height="36">
         {% endif %}
     {% endif %}
     {% if theme.title_visible %}
diff --git a/admin_interface/templates/admin_interface/favicon.html b/admin_interface/templates/admin_interface/favicon.html
index 4a4cf18..7c7c5cb 100644
--- a/admin_interface/templates/admin_interface/favicon.html
+++ b/admin_interface/templates/admin_interface/favicon.html
@@ -1,7 +1,7 @@
 {% load static %}
 
 {% if theme.favicon %}
-<link rel="icon" type="image/x-icon" href="{{ theme.favicon.url }}?v={{ version }}" />
+<link rel="icon" href="{{ theme.favicon.url }}?v={{ version }}">
 {% if theme.env_visible_in_favicon %}
 <script type="text/javascript" src="{% static 'admin_interface/favico/favico-0.3.10-patched.min.js' %}?v={{ version }}"></script>
 <script type="text/javascript">
diff --git a/admin_interface/templates/admin_interface/language_chooser.html b/admin_interface/templates/admin_interface/language_chooser.html
index d7d39d8..15ea3e5 100644
--- a/admin_interface/templates/admin_interface/language_chooser.html
+++ b/admin_interface/templates/admin_interface/language_chooser.html
@@ -5,7 +5,7 @@
     {% for language in languages %}
     <form class="language-chooser-hidden-form" id="language-chooser-hidden-form-{{ language.code }}" action="{{ language.activation_url }}" method="POST">
         {% csrf_token %}
-        <input name="language" type="hidden" value="{{ language.code }}" />
+        <input name="language" type="hidden" value="{{ language.code }}">
     </form>
     {% endfor %}
     <form class="language-chooser-select-form">
@@ -17,4 +17,4 @@
         </select>
     </form>
 </div>
-{% endif %}
\ No newline at end of file
+{% endif %}
diff --git a/admin_interface/templates/admin_interface/related-modal.html b/admin_interface/templates/admin_interface/related-modal.html
index c1824b6..a1e707e 100644
--- a/admin_interface/templates/admin_interface/related-modal.html
+++ b/admin_interface/templates/admin_interface/related-modal.html
@@ -1,7 +1,7 @@
 {% load static %}
 
 {% if theme.related_modal_active %}
-<link rel="stylesheet" type="text/css" href="{% static 'admin_interface/magnific-popup/magnific-popup.css' %}?v={{ version }}" />
+<link rel="stylesheet" type="text/css" href="{% static 'admin_interface/magnific-popup/magnific-popup.css' %}?v={{ version }}">
 <script type="text/javascript" src="{% static 'admin_interface/magnific-popup/jquery.magnific-popup.js' %}?v={{ version }}"></script>
 <script type="text/javascript" src="{% static 'admin_interface/related-modal/related-modal.js' %}?v={{ version }}"></script>
 {% endif %}