diff --git a/app/models/announcement.rb b/app/models/announcement.rb
index 83a8d3682..00529766a 100644
--- a/app/models/announcement.rb
+++ b/app/models/announcement.rb
@@ -21,8 +21,8 @@ class Announcement < ApplicationRecord
   scope :unpublished, -> { where(published: false) }
   scope :published, -> { where(published: true) }
   scope :without_muted, ->(account) { joins("LEFT OUTER JOIN announcement_mutes ON announcement_mutes.announcement_id = announcements.id AND announcement_mutes.account_id = #{account.id}").where(announcement_mutes: { id: nil }) }
-  scope :chronological, -> { order(Arel.sql('COALESCE(announcements.starts_at, announcements.scheduled_at, announcements.published_at, announcements.created_at) ASC')) }
-  scope :reverse_chronological, -> { order(Arel.sql('COALESCE(announcements.starts_at, announcements.scheduled_at, announcements.published_at, announcements.created_at) DESC')) }
+  scope :chronological, -> { order(coalesced_chronology_timestamps.asc) }
+  scope :reverse_chronological, -> { order(coalesced_chronology_timestamps.desc) }
 
   has_many :announcement_mutes, dependent: :destroy
   has_many :announcement_reactions, dependent: :destroy
@@ -33,6 +33,16 @@ class Announcement < ApplicationRecord
 
   before_validation :set_published, on: :create
 
+  class << self
+    def coalesced_chronology_timestamps
+      Arel.sql(
+        <<~SQL.squish
+          COALESCE(announcements.starts_at, announcements.scheduled_at, announcements.published_at, announcements.created_at)
+        SQL
+      )
+    end
+  end
+
   def to_log_human_identifier
     text
   end