diff --git a/app/models/conference.rb b/app/models/conference.rb
index 90a45345..8f306380 100644
--- a/app/models/conference.rb
+++ b/app/models/conference.rb
@@ -96,7 +96,7 @@ class Conference < ApplicationRecord
   after_create :create_free_ticket
   after_update :delete_event_schedules
 
-  enum ticket_layout: [:portrait, :landscape]
+  enum :ticket_layout, [:portrait, :landscape]
 
   ##
   # Checks if the user is registered to the conference
diff --git a/app/models/payment.rb b/app/models/payment.rb
index e313f8dd..4d28887e 100644
--- a/app/models/payment.rb
+++ b/app/models/payment.rb
@@ -12,7 +12,7 @@ class Payment < ApplicationRecord
   validates :user_id, presence: true
   validates :conference_id, presence: true
 
-  enum status: {
+  enum :status, {
     unpaid:  0,
     success: 1,
     failure: 2
diff --git a/app/models/survey.rb b/app/models/survey.rb
index 66783e90..933fa9f6 100644
--- a/app/models/survey.rb
+++ b/app/models/survey.rb
@@ -5,7 +5,7 @@ class Survey < ActiveRecord::Base
   has_many :survey_questions, dependent: :destroy
   has_many :survey_submissions, dependent: :destroy
 
-  enum target: [:after_conference, :during_registration, :after_event]
+  enum :target, [:after_conference, :during_registration, :after_event]
   validates :title, presence: true
 
   ##
diff --git a/app/models/survey_question.rb b/app/models/survey_question.rb
index 748f70dd..520e24dc 100644
--- a/app/models/survey_question.rb
+++ b/app/models/survey_question.rb
@@ -5,7 +5,7 @@ class SurveyQuestion < ActiveRecord::Base
   has_many :survey_replies, dependent: :destroy
 
   # Order of this list should not be changed without proper action!
-  enum kind: [:boolean, :choice, :string, :text, :datetime, :numeric]
+  enum :kind, [:boolean, :choice, :string, :text, :datetime, :numeric]
 
   ICONS = { boolean: 'circle-dot', choice: 'square-check', string: 'pen-to-square', text: 'align-left', datetime: 'clock', numeric: 'hashtag' }.freeze