diff --git a/app/controllers/sac_cas/event/register_controller.rb b/app/controllers/sac_cas/event/register_controller.rb
index 81d9597d3..fe9005f4a 100644
--- a/app/controllers/sac_cas/event/register_controller.rb
+++ b/app/controllers/sac_cas/event/register_controller.rb
@@ -9,6 +9,11 @@ module SacCas::Event::RegisterController
   def save_entry
     if super
       person.send_reset_password_instructions
+      Group::AboBasicLogin::BasicLogin.create!(group: abo_basic_login_group, person: person)
     end
   end
+
+  def abo_basic_login_group
+    Group::AboBasicLogin.where(layer_group_id: Group.root.id).first
+  end
 end
diff --git a/spec/controllers/event/register_controller_spec.rb b/spec/controllers/event/register_controller_spec.rb
index 220bf87bd..db8a8f58a 100644
--- a/spec/controllers/event/register_controller_spec.rb
+++ b/spec/controllers/event/register_controller_spec.rb
@@ -14,6 +14,12 @@
     end
   end
   let(:group) { event.groups.first }
+  before do
+    Group::AboBasicLogin.create!(
+      parent: groups(:abos),
+      self_registration_role_type: "Group::AboBasicLogin::BasicLogin"
+    )
+  end
 
   let(:attrs) {
     {
@@ -46,7 +52,12 @@
         expect do
           put :register, params: {group_id: group.id, id: event.id, event_participation_contact_data: attrs}
         end.to change { Person.count }.by(1)
+          .and change { Group::AboBasicLogin::BasicLogin.count }.by(1)
+
+        person = Person.find_by(email: "max.muster@example.com")
 
+        expect(person.roles.size).to eq(1)
+        expect(person.roles.first.type).to eq(Group::AboBasicLogin::BasicLogin.sti_name)
         is_expected.to redirect_to(new_group_event_participation_path(group, event))
         expect(flash[:notice]).to include "Deine persönlichen Daten wurden aufgenommen. Bitte ergänze nun noch die Angaben"
       end