diff --git a/HACKING b/HACKING
index 1acf58923..586a8ab42 100644
--- a/HACKING
+++ b/HACKING
@@ -158,11 +158,11 @@ infrastructure in place for it from the start.  Use it like this:
 
 ## Translations
 
-Introduce yourself on #freedombox IRC (irc.debian.org) and start translating 
+Introduce yourself on #freedombox IRC (irc.debian.org) and start translating
 the PO file from your language directory from:
 Plinth/plinth/locale/
-Introducing yourself is important since some work may have been done already 
-on Debian translators discussion lists and Transifex localization platform. 
+Introducing yourself is important since some work may have been done already
+on Debian translators discussion lists and Transifex localization platform.
 https://www.transifex.com/freedombox/
 https://www.debian.org/MailingLists/subscribe
 For more information on translations: https://wiki.debian.org/FreedomBox/Translate
diff --git a/plinth/modules/ikiwiki/templates/ikiwiki_manage.html b/plinth/modules/ikiwiki/templates/ikiwiki_manage.html
index 3afdb8172..f2052043e 100644
--- a/plinth/modules/ikiwiki/templates/ikiwiki_manage.html
+++ b/plinth/modules/ikiwiki/templates/ikiwiki_manage.html
@@ -49,7 +49,7 @@
         <div class="list-group">
           {% for site in sites %}
             <div class="list-group-item clearfix">
-    	      <a href="{% url 'ikiwiki:delete' site %}"
+              <a href="{% url 'ikiwiki:delete' site %}"
                  class="btn btn-default btn-sm pull-right"
                  role="button"
                  title="{% blocktrans %}Delete site {{ site }}{% endblocktrans %}">
diff --git a/plinth/modules/names/templates/names.html b/plinth/modules/names/templates/names.html
index 229157311..dfe5a9ab0 100644
--- a/plinth/modules/names/templates/names.html
+++ b/plinth/modules/names/templates/names.html
@@ -27,33 +27,33 @@
   <div class="col-lg-8">
     <table class="table table-bordered table-condensed table-striped">
       <thead>
-	<tr>
-	  <td></td>
-	  {% for service in status.services %}
-	  <td>
-	    <div class="text-center">{{ service }}</div>
-	  </td>
-	  {% endfor %}
-	</tr>
+        <tr>
+          <td></td>
+          {% for service in status.services %}
+          <td>
+            <div class="text-center">{{ service }}</div>
+          </td>
+          {% endfor %}
+        </tr>
       </thead>
       <tbody>
-	{% for name_service in status.name_services %}
-	<tr>
-	  <td>
-	    <b>{{ name_service.type }}</b><br>
-	    <i>{{ name_service.name }}</i>
-	  </td>
-	  {% for service in name_service.services_enabled %}
-	  <td>
-	    {% if service %}
-	    <span class="label label-success">{% trans "Enabled" %}</span>
-	    {% else %}
-	    <span class="label label-warning">{% trans "Disabled" %}</span>
-	    {% endif %}
-	  </td>
-	  {% endfor %}
-	</tr>
-	{% endfor %}
+        {% for name_service in status.name_services %}
+        <tr>
+          <td>
+            <b>{{ name_service.type }}</b><br>
+            <i>{{ name_service.name }}</i>
+          </td>
+          {% for service in name_service.services_enabled %}
+          <td>
+            {% if service %}
+            <span class="label label-success">{% trans "Enabled" %}</span>
+            {% else %}
+            <span class="label label-warning">{% trans "Disabled" %}</span>
+            {% endif %}
+          </td>
+          {% endfor %}
+        </tr>
+        {% endfor %}
       </tbody>
     </table>
   </div>
diff --git a/plinth/modules/snapshot/templates/snapshot_delete.html b/plinth/modules/snapshot/templates/snapshot_delete.html
index c2276bea1..92d285c7c 100644
--- a/plinth/modules/snapshot/templates/snapshot_delete.html
+++ b/plinth/modules/snapshot/templates/snapshot_delete.html
@@ -29,18 +29,18 @@
   <div class="row">
     <div class="col-lg-12">
       <table class="table table-bordered table-condensed table-striped">
-	<thead>
-	  <th>{% trans "Number" %}</th>
-	  <th>{% trans "Date" %}</th>
-	  <th>{% trans "Description" %}</th>
-	</thead>
-	<tbody>
-	  <tr>
-	    <td>{{ snapshot.number }}</td>
-	    <td>{{ snapshot.date }}</td>
-	    <td>{{ snapshot.description }}</td>
-	  </tr>
-	</tbody>
+        <thead>
+          <th>{% trans "Number" %}</th>
+          <th>{% trans "Date" %}</th>
+          <th>{% trans "Description" %}</th>
+        </thead>
+        <tbody>
+          <tr>
+            <td>{{ snapshot.number }}</td>
+            <td>{{ snapshot.date }}</td>
+            <td>{{ snapshot.description }}</td>
+          </tr>
+        </tbody>
       </table>
     </div>
   </div>
diff --git a/plinth/modules/snapshot/templates/snapshot_rollback.html b/plinth/modules/snapshot/templates/snapshot_rollback.html
index de5886e3b..4783cd72b 100644
--- a/plinth/modules/snapshot/templates/snapshot_rollback.html
+++ b/plinth/modules/snapshot/templates/snapshot_rollback.html
@@ -37,18 +37,18 @@
   <div class="row">
     <div class="col-lg-12">
       <table class="table table-bordered table-condensed table-striped">
-	<thead>
-	  <th>{% trans "Number" %}</th>
-	  <th>{% trans "Date" %}</th>
-	  <th>{% trans "Description" %}</th>
-	</thead>
-	<tbody>
-	  <tr>
-	    <td>{{ snapshot.number }}</td>
-	    <td>{{ snapshot.date }}</td>
-	    <td>{{ snapshot.description }}</td>
-	  </tr>
-	</tbody>
+        <thead>
+          <th>{% trans "Number" %}</th>
+          <th>{% trans "Date" %}</th>
+          <th>{% trans "Description" %}</th>
+        </thead>
+        <tbody>
+          <tr>
+            <td>{{ snapshot.number }}</td>
+            <td>{{ snapshot.date }}</td>
+            <td>{{ snapshot.description }}</td>
+          </tr>
+        </tbody>
       </table>
     </div>
   </div>