diff --git a/fet2020/blackboard/admin.py b/fet2020/blackboard/admin.py
index e88014c5..fe9f25eb 100644
--- a/fet2020/blackboard/admin.py
+++ b/fet2020/blackboard/admin.py
@@ -4,6 +4,7 @@ from .forms import JobPostingForm
 from .models import JobPosting
 
 
+@admin.register(JobPosting)
 class JobPostingAdmin(admin.ModelAdmin):
     form = JobPostingForm
     model = JobPosting
@@ -34,6 +35,3 @@ class JobPostingAdmin(admin.ModelAdmin):
             form_url,
             extra_context=extra_context,
         )
-
-
-admin.site.register(JobPosting, JobPostingAdmin)
diff --git a/fet2020/core/admin.py b/fet2020/core/admin.py
index d6429e5f..669391c3 100644
--- a/fet2020/core/admin.py
+++ b/fet2020/core/admin.py
@@ -10,6 +10,7 @@ from .models import CustomFlatPage
 
 
 # Define a new FlatPageAdmin
+@admin.register(CustomFlatPage)
 class CustomFlatPageAdmin(FlatPageAdmin):
     form = FlatPageForm
     fieldsets = (
@@ -85,7 +86,6 @@ admin.site.site_title = "FET"
 
 # Re-register FlatPageAdmin
 admin.site.unregister(FlatPage)
-admin.site.register(CustomFlatPage, CustomFlatPageAdmin)
 
 admin.site.unregister(Site)
 
diff --git a/fet2020/finance/admin.py b/fet2020/finance/admin.py
index 5ae79f95..991d764c 100644
--- a/fet2020/finance/admin.py
+++ b/fet2020/finance/admin.py
@@ -23,6 +23,7 @@ class BillInline(admin.TabularInline):
     show_change_link = True
 
 
+@admin.register(BankData)
 class BankDataAdmin(admin.ModelAdmin):
     form = BankDataAdminForm
     model = BankData
@@ -52,6 +53,7 @@ class BankDataAdmin(admin.ModelAdmin):
         )
 
 
+@admin.register(Bill)
 class BillAdmin(admin.ModelAdmin):
     form = BillAdminForm
     model = Bill
@@ -142,6 +144,7 @@ class BillAdmin(admin.ModelAdmin):
         obj.author = request.user
         super().save_model(request, obj, form, change)
 
+    @admin.display(description="Kontoinhaber:in")
     def get_bankdata_name(self, obj):
         try:
             tmp = BankData.objects.get(id=obj.bankdata.id)
@@ -150,8 +153,7 @@ class BillAdmin(admin.ModelAdmin):
 
         return f"{ tmp.name }"
 
-    get_bankdata_name.short_description = "Kontoinhaber:in"
-
+    @admin.display(description="IBAN")
     def get_bankdata_iban(self, obj):
         try:
             tmp = BankData.objects.get(id=obj.bankdata.id)
@@ -160,8 +162,7 @@ class BillAdmin(admin.ModelAdmin):
 
         return f"{ tmp.iban }"
 
-    get_bankdata_iban.short_description = "IBAN"
-
+    @admin.display(description="BIC")
     def get_bankdata_bic(self, obj):
         try:
             tmp = BankData.objects.get(id=obj.bankdata.id)
@@ -170,8 +171,7 @@ class BillAdmin(admin.ModelAdmin):
 
         return f"{ tmp.bic }"
 
-    get_bankdata_bic.short_description = "BIC"
-
+    @admin.display(description="Status")
     def status_colored(self, obj):
         # TODO: if there is a status without color, set nothing.
         colors = {
@@ -184,8 +184,6 @@ class BillAdmin(admin.ModelAdmin):
             f'<b style="background:{colors[obj.status]};">{obj.get_status_display()}</b>'
         )
 
-    status_colored.short_description = "Status"
-
     @admin.action(description="Als 'Abgerechnet' markieren.")
     def make_cleared(self, request, queryset):
         updated = queryset.update(status="C")
@@ -215,6 +213,7 @@ class BillAdmin(admin.ModelAdmin):
         )
 
 
+@admin.register(Resolution)
 class ResolutionAdmin(admin.ModelAdmin):
     form = ResolutionAdminForm
     model = Resolution
@@ -285,6 +284,7 @@ class ResolutionAdmin(admin.ModelAdmin):
             extra_context=extra_context,
         )
 
+    @admin.display(description="Gesamtsumme (EUR)")
     def total(self, obj):
         total = 0
         bills = Bill.objects.filter(resolution=obj)
@@ -293,9 +293,8 @@ class ResolutionAdmin(admin.ModelAdmin):
 
         return f"{ total }"
 
-    total.short_description = "Gesamtsumme (EUR)"
-
 
+@admin.register(Wiref)
 class WirefAdmin(admin.ModelAdmin):
     form = WirefAdminForm
     model = Wiref
@@ -327,6 +326,7 @@ class WirefAdmin(admin.ModelAdmin):
             extra_context=extra_context,
         )
 
+    @admin.display(description="Gesamtsumme (EUR)")
     def total(self, obj):
         total = 0
         bills = Bill.objects.filter(wiref=obj)
@@ -334,11 +334,3 @@ class WirefAdmin(admin.ModelAdmin):
             total += elem.amount
 
         return f"{ total }"
-
-    total.short_description = "Gesamtsumme (EUR)"
-
-
-admin.site.register(BankData, BankDataAdmin)
-admin.site.register(Bill, BillAdmin)
-admin.site.register(Resolution, ResolutionAdmin)
-admin.site.register(Wiref, WirefAdmin)
diff --git a/fet2020/gallery/admin.py b/fet2020/gallery/admin.py
index 35aa0c72..691cc4f0 100644
--- a/fet2020/gallery/admin.py
+++ b/fet2020/gallery/admin.py
@@ -4,6 +4,7 @@ from .forms import AlbumAdminForm
 from .models import Album
 
 
+@admin.register(Album)
 class AlbumAdmin(admin.ModelAdmin):
     form = AlbumAdminForm
     model = Album
@@ -36,6 +37,3 @@ class AlbumAdmin(admin.ModelAdmin):
     def save_model(self, request, obj, form, change):
         obj.author = request.user
         super().save_model(request, obj, form, change)
-
-
-admin.site.register(Album, AlbumAdmin)
diff --git a/fet2020/intern/admin.py b/fet2020/intern/admin.py
index 15fb3a76..e31aeed2 100644
--- a/fet2020/intern/admin.py
+++ b/fet2020/intern/admin.py
@@ -49,6 +49,7 @@ class FileUploadInline(admin.TabularInline):
     verbose_name_plural = "Dateien"
 
 
+@admin.register(TopicGroup)
 class TopicGroupAdmin(admin.ModelAdmin):
     form = TopicGroupAdminForm
     model = TopicGroup
@@ -98,6 +99,7 @@ class TopicGroupAdmin(admin.ModelAdmin):
         super().save_model(request, obj, form, change)
 
 
+@admin.register(Topic)
 class TopicAdmin(admin.ModelAdmin):
     form = TopicAdminForm
     model = Topic
@@ -146,6 +148,7 @@ class TopicAdmin(admin.ModelAdmin):
         super().save_model(request, obj, form, change)
 
 
+@admin.register(Attachment)
 class AttachmentAdmin(admin.ModelAdmin):
     form = AttachmentAdminForm
     model = Attachment
@@ -193,6 +196,7 @@ class AttachmentAdmin(admin.ModelAdmin):
         super().save_model(request, obj, form, change)
 
 
+@admin.register(Etherpad)
 class EtherpadAdmin(admin.ModelAdmin):
     form = EtherpadAdminForm
     model = Etherpad
@@ -225,6 +229,7 @@ class EtherpadAdmin(admin.ModelAdmin):
         super().save_model(request, obj, form, change)
 
 
+@admin.register(FileUpload)
 class FileUploadAdmin(admin.ModelAdmin):
     form = FileUploadAdminForm
     model = FileUpload
@@ -254,10 +259,3 @@ class FileUploadAdmin(admin.ModelAdmin):
     def save_model(self, request, obj, form, change):
         obj.created_by = request.user
         super().save_model(request, obj, form, change)
-
-
-admin.site.register(TopicGroup, TopicGroupAdmin)
-admin.site.register(Topic, TopicAdmin)
-admin.site.register(Attachment, AttachmentAdmin)
-admin.site.register(Etherpad, EtherpadAdmin)
-admin.site.register(FileUpload, FileUploadAdmin)
diff --git a/fet2020/members/admin.py b/fet2020/members/admin.py
index 3728b08a..2aa732d0 100644
--- a/fet2020/members/admin.py
+++ b/fet2020/members/admin.py
@@ -64,6 +64,7 @@ class JobInline(admin.TabularInline):
     show_change_link = True
 
 
+@admin.register(Member)
 class MemberAdmin(admin.ModelAdmin):
     form = MemberForm
     model = Member
@@ -120,6 +121,7 @@ class MemberAdmin(admin.ModelAdmin):
         super().save_model(request, obj, form, change)
 
 
+@admin.register(Job)
 class JobAdmin(admin.ModelAdmin):
     form = JobForm
     model = Job
@@ -175,6 +177,7 @@ class JobAdmin(admin.ModelAdmin):
         super().save_model(request, obj, form, change)
 
 
+@admin.register(JobGroup)
 class JobGroupAdmin(admin.ModelAdmin):
     form = JobGroupForm
     model = JobGroup
@@ -228,8 +231,3 @@ class JobGroupAdmin(admin.ModelAdmin):
     def save_model(self, request, obj, form, change):
         obj.author = request.user
         super().save_model(request, obj, form, change)
-
-
-admin.site.register(Member, MemberAdmin)
-admin.site.register(Job, JobAdmin)
-admin.site.register(JobGroup, JobGroupAdmin)
diff --git a/fet2020/posts/admin.py b/fet2020/posts/admin.py
index 6e2245b7..a46e26a7 100644
--- a/fet2020/posts/admin.py
+++ b/fet2020/posts/admin.py
@@ -6,6 +6,7 @@ from .forms import EventForm, FetMeetingForm, NewsForm, PostForm
 from .models import Event, FetMeeting, FileUpload, News, Post
 
 
+@admin.action(description="In eine Fachschaftssitzung konvertieren")
 def make_fetmeeting(self, request, queryset):
     qs = self.get_queryset(request).filter(id=request.POST["_selected_action"]).first()
 
@@ -41,9 +42,6 @@ def make_fetmeeting(self, request, queryset):
     )
 
 
-make_fetmeeting.short_description = "In eine Fachschaftssitzung konvertieren"
-
-
 class FileUploadInline(admin.TabularInline):
     model = FileUpload
     extra = 0
@@ -97,6 +95,7 @@ class PostAdmin(admin.ModelAdmin):
         ]
 
 
+@admin.register(News)
 class NewsAdmin(PostAdmin):
     form = NewsForm
     model = News
@@ -144,6 +143,7 @@ class NewsAdmin(PostAdmin):
     inlines = (FileUploadInline,)
 
 
+@admin.register(Event)
 class EventAdmin(PostAdmin):
     form = EventForm
     model = Event
@@ -205,6 +205,7 @@ class EventAdmin(PostAdmin):
     )
 
 
+@admin.register(FetMeeting)
 class FetMeetingAdmin(EventAdmin):
     form = FetMeetingForm
     model = FetMeeting
@@ -226,8 +227,3 @@ class FetMeetingAdmin(EventAdmin):
             },
         ),
     )
-
-
-admin.site.register(Event, EventAdmin)
-admin.site.register(News, NewsAdmin)
-admin.site.register(FetMeeting, FetMeetingAdmin)