diff --git a/app/models/bookmark.rb b/app/models/bookmark.rb
index c741877bdcb..1b00b4b4d43 100644
--- a/app/models/bookmark.rb
+++ b/app/models/bookmark.rb
@@ -100,18 +100,18 @@ end
 #
 # Table name: bookmarks
 #
-#  id                        :bigint           not null, primary key
-#  user_id                   :bigint           not null
-#  topic_id                  :bigint           not null
-#  post_id                   :bigint           not null
-#  name                      :string(100)
-#  reminder_type             :integer
-#  reminder_at               :datetime
-#  created_at                :datetime         not null
-#  updated_at                :datetime         not null
-#  reminder_last_sent_at     :datetime
-#  reminder_set_at           :datetime
-#  auto_delete_preference             :integer
+#  id                     :bigint           not null, primary key
+#  user_id                :bigint           not null
+#  topic_id               :bigint           not null
+#  post_id                :bigint           not null
+#  name                   :string(100)
+#  reminder_type          :integer
+#  reminder_at            :datetime
+#  created_at             :datetime         not null
+#  updated_at             :datetime         not null
+#  reminder_last_sent_at  :datetime
+#  reminder_set_at        :datetime
+#  auto_delete_preference :integer          default(0), not null
 #
 # Indexes
 #
diff --git a/app/models/email_change_request.rb b/app/models/email_change_request.rb
index d5fd0e57d9c..4307cdb457f 100644
--- a/app/models/email_change_request.rb
+++ b/app/models/email_change_request.rb
@@ -19,7 +19,7 @@ end
 #
 #  id                 :integer          not null, primary key
 #  user_id            :integer          not null
-#  old_email          :string           not null
+#  old_email          :string
 #  new_email          :string           not null
 #  old_email_token_id :integer
 #  new_email_token_id :integer
diff --git a/app/models/topic_custom_field.rb b/app/models/topic_custom_field.rb
index ba5767084e5..e922b7b26e3 100644
--- a/app/models/topic_custom_field.rb
+++ b/app/models/topic_custom_field.rb
@@ -17,6 +17,7 @@ end
 #
 # Indexes
 #
+#  idx_topic_custom_fields_accepted_answer         (topic_id) UNIQUE WHERE ((name)::text = 'accepted_answer_post_id'::text)
 #  index_topic_custom_fields_on_topic_id_and_name  (topic_id,name)
 #  topic_custom_fields_value_key_idx               (value,name) WHERE ((value IS NOT NULL) AND (char_length(value) < 400))
 #