diff --git a/wagtail/wagtailadmin/templates/wagtailadmin/home.html b/wagtail/wagtailadmin/templates/wagtailadmin/home.html
index ab855154e4..7428c7c959 100644
--- a/wagtail/wagtailadmin/templates/wagtailadmin/home.html
+++ b/wagtail/wagtailadmin/templates/wagtailadmin/home.html
@@ -20,7 +20,7 @@
             {% endif %}
             <div class="col9">
                 <h1>{% blocktrans %}Welcome to the {{ site_name }} Wagtail CMS{% endblocktrans %}</h1> 
-                <h2>{{ user.get_full_name|default:user.username }}</h2>
+                <h2>{{ user.get_full_name|default:user.get_username }}</h2>
             </div>
         </div>
     </header>
diff --git a/wagtail/wagtailadmin/templates/wagtailadmin/pages/edit.html b/wagtail/wagtailadmin/templates/wagtailadmin/pages/edit.html
index 96ef819fde..51f9d8ba13 100644
--- a/wagtail/wagtailadmin/templates/wagtailadmin/pages/edit.html
+++ b/wagtail/wagtailadmin/templates/wagtailadmin/pages/edit.html
@@ -80,7 +80,7 @@
                         {% if page.get_latest_revision %}
                             {% blocktrans with last_mod=page.get_latest_revision.created_at %}Last modified: {{ last_mod }}{% endblocktrans %}
                             {% if page.get_latest_revision.user %}
-                                {% blocktrans with modified_by=page.get_latest_revision.user.get_full_name|default:page.get_latest_revision.user.username %}by {{ modified_by }}{% endblocktrans %}
+                                {% blocktrans with modified_by=page.get_latest_revision.user.get_full_name|default:page.get_latest_revision.user.get_username %}by {{ modified_by }}{% endblocktrans %}
                                 {% if page.get_latest_revision.user.email %}
                                     <span class="avatar small icon icon-user"><img src="{% gravatar_url page.get_latest_revision.user.email 25 %}" /></span>
                                 {% endif %}
diff --git a/wagtail/wagtailusers/models.py b/wagtail/wagtailusers/models.py
index 5e63e6af3f..7d0083e7e9 100644
--- a/wagtail/wagtailusers/models.py
+++ b/wagtail/wagtailusers/models.py
@@ -28,4 +28,4 @@ class UserProfile(models.Model):
         return cls.objects.get_or_create(user=user)[0]
 
     def __str__(self):
-        return self.user.username
+        return self.user.get_username()
diff --git a/wagtail/wagtailusers/templates/wagtailusers/users/edit.html b/wagtail/wagtailusers/templates/wagtailusers/users/edit.html
index 22ae8b3a7f..1a559c6b37 100644
--- a/wagtail/wagtailusers/templates/wagtailusers/users/edit.html
+++ b/wagtail/wagtailusers/templates/wagtailusers/users/edit.html
@@ -1,12 +1,12 @@
 {% extends "wagtailadmin/base.html" %}
 {% load wagtailimages_tags %}
 {% load i18n %}
-{% block titletag %}{% trans "Editing" %} {{ user.username}}{% endblock %}
+{% block titletag %}{% trans "Editing" %} {{ user.get_username}}{% endblock %}
 {% block bodyclass %}menu-users{% endblock %}
 {% block content %}
     
     {% trans "Editing" as editing_str %}
-    {% include "wagtailadmin/shared/header.html" with title=editing_str subtitle=user.username merged=1 tabbed=1 icon="user" %}
+    {% include "wagtailadmin/shared/header.html" with title=editing_str subtitle=user.get_username merged=1 tabbed=1 icon="user" %}
 
     <ul class="tab-nav merged">
         <li class="active"><a href="#account">{% trans "Account" %}</a></li>
diff --git a/wagtail/wagtailusers/templates/wagtailusers/users/list.html b/wagtail/wagtailusers/templates/wagtailusers/users/list.html
index 372b803450..a9eb47d4bc 100644
--- a/wagtail/wagtailusers/templates/wagtailusers/users/list.html
+++ b/wagtail/wagtailusers/templates/wagtailusers/users/list.html
@@ -29,10 +29,10 @@
                 <td class="title">
                     <h2>
                         <span class="avatar small icon icon-user"><img src="{% gravatar_url user.email 25 %}" /></span>
-                        <a href="{% url 'wagtailusers_users_edit' user.id %}">{{ user.get_full_name|default:user.username }}</a>
+                        <a href="{% url 'wagtailusers_users_edit' user.id %}">{{ user.get_full_name|default:user.get_username }}</a>
                     </h2>
                 </td>
-                <td class="username">{{ user.username }}</td>
+                <td class="username">{{ user.get_username }}</td>
                 <td class="level">{% if user.is_superuser %}{% trans "Admin" %}{% endif %}</td>
                 <td class="status"><div class="status-tag {% if user.is_active %}primary{% endif %}">{% if user.is_active %}{% trans "Active" %}{% else %}{% trans "Inactive" %}{% endif %}</div></td>
             </tr>