diff --git a/app/controllers/admin/booths_controller.rb b/app/controllers/admin/booths_controller.rb
index 0a899921..0d235b98 100644
--- a/app/controllers/admin/booths_controller.rb
+++ b/app/controllers/admin/booths_controller.rb
@@ -130,8 +130,7 @@ module Admin
     end
 
     def booth_params
-      params.require(:booth).permit(:title, :description, :reasoning, :state, :picture, :conference_id,
-                                    :created_at, :updated_at, :submitter_relationship, :website_url, responsible_ids: [])
+      params.require(:booth).permit(:title, :description, :reasoning, :picture, :website_url, :submitter_relationship, responsible_ids: [])
     end
   end
 end
diff --git a/app/controllers/admin/difficulty_levels_controller.rb b/app/controllers/admin/difficulty_levels_controller.rb
index e5717f7e..0453542c 100644
--- a/app/controllers/admin/difficulty_levels_controller.rb
+++ b/app/controllers/admin/difficulty_levels_controller.rb
@@ -51,7 +51,7 @@ module Admin
     private
 
     def difficulty_level_params
-      params.require(:difficulty_level).permit(:title, :description, :color, :conference_id)
+      params.require(:difficulty_level).permit(:title, :description, :color)
     end
   end
 end
diff --git a/app/controllers/admin/event_types_controller.rb b/app/controllers/admin/event_types_controller.rb
index a171b427..81f3f1f8 100644
--- a/app/controllers/admin/event_types_controller.rb
+++ b/app/controllers/admin/event_types_controller.rb
@@ -49,7 +49,7 @@ module Admin
     private
 
     def event_type_params
-      params.require(:event_type).permit(:title, :length, :minimum_abstract_length, :maximum_abstract_length, :color, :conference_id, :description)
+      params.require(:event_type).permit(:title, :length, :minimum_abstract_length, :maximum_abstract_length, :color, :description)
     end
   end
 end
diff --git a/app/controllers/admin/events_controller.rb b/app/controllers/admin/events_controller.rb
index 27b19112..6f3227ef 100644
--- a/app/controllers/admin/events_controller.rb
+++ b/app/controllers/admin/events_controller.rb
@@ -178,7 +178,7 @@ module Admin
     end
 
     def comment_params
-      params.require(:comment).permit(:commentable, :body, :user_id)
+      params.require(:comment).permit(:body)
     end
 
     def update_state(transition, notice, mail = false, subject = false, send_mail = false)
diff --git a/app/controllers/admin/lodgings_controller.rb b/app/controllers/admin/lodgings_controller.rb
index 639e0544..56fc55d4 100644
--- a/app/controllers/admin/lodgings_controller.rb
+++ b/app/controllers/admin/lodgings_controller.rb
@@ -49,7 +49,7 @@ module Admin
     private
 
     def lodging_params
-      params.require(:lodging).permit(:name, :description, :picture, :picture_cache, :website_link, :conference_id)
+      params.require(:lodging).permit(:name, :description, :picture, :picture_cache, :website_link)
     end
   end
 end
diff --git a/app/controllers/admin/questions_controller.rb b/app/controllers/admin/questions_controller.rb
index b6451c92..6ebf67f5 100644
--- a/app/controllers/admin/questions_controller.rb
+++ b/app/controllers/admin/questions_controller.rb
@@ -97,7 +97,7 @@ module Admin
     private
 
     def question_params
-      params.require(:question).permit(:title, :global, :answer_ids, :question_type_id, :conference_id, answers_attributes: [:id, :title])
+      params.require(:question).permit(:title, :global, :answer_ids, :question_type_id, answers_attributes: [:id, :title])
     end
 
     def conference_params
diff --git a/app/controllers/admin/registrations_controller.rb b/app/controllers/admin/registrations_controller.rb
index 88027bbd..b36ab05c 100644
--- a/app/controllers/admin/registrations_controller.rb
+++ b/app/controllers/admin/registrations_controller.rb
@@ -82,8 +82,7 @@ module Admin
 
     def registration_params
       params.require(:registration).permit(
-        :user_id, :conference_id, :attended,
-        :volunteer, :other_special_needs, :accepted_code_of_conduct,
+        :attended, :volunteer, :other_special_needs, :accepted_code_of_conduct,
         vchoice_ids: [], qanswer_ids: [], qanswers_attributes: [], event_ids: []
       )
     end
diff --git a/app/controllers/admin/resources_controller.rb b/app/controllers/admin/resources_controller.rb
index a6e51e99..07ecb869 100644
--- a/app/controllers/admin/resources_controller.rb
+++ b/app/controllers/admin/resources_controller.rb
@@ -48,7 +48,7 @@ module Admin
     private
 
     def resource_params
-      params.require(:resource).permit(:name, :description, :quantity, :used, :conference_id)
+      params.require(:resource).permit(:name, :description, :quantity, :used)
     end
   end
 end
diff --git a/app/controllers/admin/sponsors_controller.rb b/app/controllers/admin/sponsors_controller.rb
index 656154d8..2e434f50 100644
--- a/app/controllers/admin/sponsors_controller.rb
+++ b/app/controllers/admin/sponsors_controller.rb
@@ -52,7 +52,7 @@ module Admin
     private
 
     def sponsor_params
-      params.require(:sponsor).permit(:name, :description, :website_url, :picture, :picture_cache, :sponsorship_level_id, :conference_id)
+      params.require(:sponsor).permit(:name, :description, :website_url, :picture, :picture_cache, :sponsorship_level_id)
     end
 
     def sponsorship_level_required
diff --git a/app/controllers/admin/sponsorship_levels_controller.rb b/app/controllers/admin/sponsorship_levels_controller.rb
index 443aa8b9..b21cff87 100644
--- a/app/controllers/admin/sponsorship_levels_controller.rb
+++ b/app/controllers/admin/sponsorship_levels_controller.rb
@@ -61,7 +61,7 @@ module Admin
     private
 
     def sponsorship_level_params
-      params.require(:sponsorship_level).permit(:title, :conference_id)
+      params.require(:sponsorship_level).permit(:title)
     end
   end
 end
diff --git a/app/controllers/admin/tickets_controller.rb b/app/controllers/admin/tickets_controller.rb
index e0e5b186..388020a8 100644
--- a/app/controllers/admin/tickets_controller.rb
+++ b/app/controllers/admin/tickets_controller.rb
@@ -52,7 +52,7 @@ module Admin
     private
 
     def ticket_params
-      params.require(:ticket).permit(:conference, :title, :url, :description, :conference_id, :price_cents, :price_currency, :price, :registration_ticket)
+      params.require(:ticket).permit(:title, :url, :description, :price_cents, :price_currency, :price, :registration_ticket)
     end
   end
 end
diff --git a/app/controllers/admin/venues_controller.rb b/app/controllers/admin/venues_controller.rb
index 17ba4c99..7383fcef 100644
--- a/app/controllers/admin/venues_controller.rb
+++ b/app/controllers/admin/venues_controller.rb
@@ -46,7 +46,7 @@ module Admin
     private
 
     def venue_params
-      params.require(:venue).permit(:name, :street, :postalcode, :city, :country, :longitude, :latitude, :description, :website, :picture, :picture_cache, :lodgings_attributes, :conference_id)
+      params.require(:venue).permit(:name, :street, :postalcode, :city, :country, :longitude, :latitude, :description, :website, :picture, :picture_cache, :lodgings_attributes)
     end
   end
 end