diff --git a/app/models/ability.rb b/app/models/ability.rb
index 91c4509..ec614fa 100755
--- a/app/models/ability.rb
+++ b/app/models/ability.rb
@@ -70,6 +70,7 @@ class Ability
       cannot :delete, Fetprofile
       cannot :delete, Studium
       cannot :delete, Modul
+      cannot :delete ,Gremium
      end
     # Rechteverwaltung fuer Neuigkeiten
 
diff --git a/app/models/gremium.rb b/app/models/gremium.rb
index 3fd6acf..aef3387 100644
--- a/app/models/gremium.rb
+++ b/app/models/gremium.rb
@@ -20,8 +20,8 @@ class Gremium < ActiveRecord::Base
   TEXT={11=>I18n.t("gremium.filter.berufung.text"),12=>I18n.t("gremium.filter.habil.text")}
 
   attr_accessible :desc, :name, :typ, :geschlecht,:thema_id, :memberships_attributes
-  has_many :memberships # Mitgliedschaften bei dem Gremium
-  has_many :nlinks, as: :link
+  has_many :memberships, dependent: :destroy # Mitgliedschaften bei dem Gremium
+  has_many :nlinks, as: :link, dependent: :destroy
   scope :search, ->(query) {where("gremien.name like ? or gremien.desc like ?", "%#{query}%", "%#{query}%")}
 
   belongs_to :thema # Gehört zu einem Thema