diff --git a/fet2020/members/admin.py b/fet2020/members/admin.py
index 4da4b3f5..3728b08a 100644
--- a/fet2020/members/admin.py
+++ b/fet2020/members/admin.py
@@ -78,7 +78,6 @@ class MemberAdmin(admin.ModelAdmin):
                         "surname",
                     ),
                     "nickname",
-                    "username",
                     "mailaccount",
                     "role",
                     "description",
diff --git a/fet2020/members/models.py b/fet2020/members/models.py
index cb864ede..35f686c9 100644
--- a/fet2020/members/models.py
+++ b/fet2020/members/models.py
@@ -1,5 +1,6 @@
 import logging
 
+from django.conf import settings
 from django.contrib.auth.models import User
 from django.core.validators import ValidationError, validate_email
 from django.db import models
@@ -31,7 +32,7 @@ class Member(models.Model):
     nickname = models.CharField("Spitzname", max_length=128)
 
     # LDAP Username
-    username = models.CharField("fet.at Benutzername", max_length=128, blank=True)
+    username = models.CharField(max_length=128)
 
     # fet mail account
     mailaccount = models.CharField(
@@ -106,6 +107,38 @@ class Member(models.Model):
     def get_model_name(self):
         return self._meta.model_name
 
+    @property
+    def image_url(self):
+        if self.image:
+            return self.image.url
+
+        # return default image
+        return settings.STATIC_URL + "img/FET-Logo-2014-quadrat.png"
+
+    @property
+    def avatar_url(self):
+        if self.image:
+            return self.image["avatar"].url
+
+        # return default image
+        return settings.STATIC_URL + "img/FET-Logo-2014-quadrat.png"
+
+    @property
+    def portrait_url(self):
+        if self.image:
+            return self.image["portrait"].url
+
+        # return default image
+        return settings.STATIC_URL + "img/FET-Logo-2014-quadrat.png"
+
+    @property
+    def thumb_url(self):
+        if self.image:
+            return self.image["thumb"].url
+
+        # return default image
+        return settings.STATIC_URL + "img/FET-Logo-2014-quadrat.png"
+
 
 class JobGroup(models.Model):
     name = models.CharField(max_length=128)
diff --git a/fet2020/posts/views.py b/fet2020/posts/views.py
index b71b6386..3efc018a 100644
--- a/fet2020/posts/views.py
+++ b/fet2020/posts/views.py
@@ -125,7 +125,7 @@ class PostDetailView(DetailView):
         post_author = Member.all_members.filter(username=self.object.author).first()
         if post_author:
             author = post_author
-            author_image = post_author.image["avatar"].url
+            author_image = post_author.avatar_url
 
         related_posts = self.object.tags.similar_objects()
         # list of non 'is_hidden' posts for related_posts
diff --git a/fet2020/templates/members/jobs.html b/fet2020/templates/members/jobs.html
index a03ccdd5..9a6ad52c 100644
--- a/fet2020/templates/members/jobs.html
+++ b/fet2020/templates/members/jobs.html
@@ -23,7 +23,7 @@
                     {% for jm in jobmem.list %}
                         <figure>
                             <a href="{{ jm.member.get_absolute_url }}">
-                                <img loading="lazy" src="{{ jm.member.image.thumb.url }}" alt="Portraitfoto von {{ jm.member.firstname }}" class="w-36 h-36 bg-white">
+                                <img loading="lazy" src="{{ jm.member.thumb_url }}" alt="Portraitfoto von {{ jm.member.firstname }}" class="w-36 h-36 bg-white">
                                 <figcaption>
                                     <h4 class="member-name">{{ jm.member.firstname }} {{ jm.member.surname }}</h4>
                                     <p class="member-role">{{ jm.get_job_role_display }}</p>
diff --git a/fet2020/templates/members/member.html b/fet2020/templates/members/member.html
index f802b2fe..c11f6495 100644
--- a/fet2020/templates/members/member.html
+++ b/fet2020/templates/members/member.html
@@ -5,7 +5,7 @@
 {% block title %}{{ member.firstname }} {{ member.surname }}{% endblock %}
 
 {% block extraheader %}
-    <meta content="{{member.image.url}}" property="og:image">
+    <meta content="{{ member.image_url }}" property="og:image">
     <meta content="{{ member.firstname }}" property="og:profile:first_name">
     <meta content="{{ member.surname }}" property="og:profile:last_name">
     <meta content="profile" property="og:type">
@@ -15,16 +15,18 @@
     <section class="flex-grow w-full max-w-prose my-8 sm:my-0 text-gray-800 dark:text-gray-300">
         <!-- Alternativtext auf jede Person anpassen: Name im alt="" dynamisch erzeugen -->
         <div>
-        <img loading="lazy" src="{{ member.image.portrait.url }}" alt="Portraitfoto von {{ member.firstname }} {{ member.surname }}" class="md:float-left w-36 mr-2 mb-2">
+        <img loading="lazy" src="{{ member.portrait_url }}" alt="Portraitfoto von {{ member.firstname }} {{ member.surname }}" class="md:float-left w-36 mr-2 mb-2">
         <div>
             <h2 class="mb-2 text-lg text-gray-900 dark:text-gray-100 text-left">{{ member.firstname }} {{ member.surname }}</h2>
             <div class="mb-2">
                 Spitzname: {{ member.nickname }}<br>
                 Mailaccount: {{ member.mailaccount }}<br>
             </div>
-            <div class="mb-2">
-                {{ member.description|softhyphen|safe }}
-            </div>
+            {% if member.description %}
+                <div class="mb-2">
+                    {{ member.description|softhyphen|safe }}
+                </div>
+            {% endif %}
         </div>
         {% if active_jobs or inactive_jobs %}
             <div x-data="collapseContent" class="clear-left">
diff --git a/fet2020/templates/members/members.html b/fet2020/templates/members/members.html
index 6ccca1fb..51f9bebe 100644
--- a/fet2020/templates/members/members.html
+++ b/fet2020/templates/members/members.html
@@ -17,7 +17,7 @@
             {% for member in members %}
                 <figure>
                     <a href="{{ member.get_absolute_url }}">
-                        <img loading="lazy" src="{{ member.image.thumb.url }}" alt="Portraitfoto von {{ member.firstname }}" class="w-36 h-36 bg-white">
+                        <img loading="lazy" src="{{ member.thumb_url }}" alt="Portraitfoto von {{ member.firstname }}" class="w-36 h-36 bg-white">
                         <figcaption>
                             <h3>{{ member.firstname }} {{ member.surname }}</h3>
                         </figcaption>
diff --git a/fet2020/templates/search/member.html b/fet2020/templates/search/member.html
index 37f5d326..e175cd9c 100644
--- a/fet2020/templates/search/member.html
+++ b/fet2020/templates/search/member.html
@@ -1,5 +1,5 @@
 <a class="flex gap-x-4 group" href="{{ result.get_absolute_url }}">
-    <div class="flex-none w-20 rounded-full aspect-square bg-center bg-no-repeat bg-cover bg-gray-300 dark:bg-gray-700" style="background-image: url('{{ result.image.url }}')"></div>
+    <div class="flex-none w-20 rounded-full aspect-square bg-center bg-no-repeat bg-cover bg-gray-300 dark:bg-gray-700" style="background-image: url('{{ result.image_url }}')"></div>
     <article class="flex-grow-0 self-center">
         <h2 class="line-clamp-1 hover:underline decoration-1 text-gray-800 dark:text-gray-200 font-medium">{{ result.firstname }} {{ result.surname }}</h2>
         <ul class="text-gray-700 dark:text-gray-300 text-sm sm:text-base">