diff --git a/db/migrate/20181207011115_downcase_custom_emoji_domains.rb b/db/migrate/20181207011115_downcase_custom_emoji_domains.rb
index b5fc70882e..76b5d54428 100644
--- a/db/migrate/20181207011115_downcase_custom_emoji_domains.rb
+++ b/db/migrate/20181207011115_downcase_custom_emoji_domains.rb
@@ -4,7 +4,7 @@ class DowncaseCustomEmojiDomains < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    CustomEmoji.connection.execute('CREATE TABLE IF NOT EXISTS emoji_reactions (id integer, custom_emoji_id integer, created_at datetime NOT NULL, updated_at datetime NOT NULL)')
+    CustomEmoji.connection.execute('CREATE TABLE IF NOT EXISTS emoji_reactions (id integer, custom_emoji_id integer, created_at timestamp NOT NULL, updated_at timestamp NOT NULL)')
 
     duplicates = CustomEmoji.connection.select_all('SELECT string_agg(id::text, \',\') AS ids FROM custom_emojis GROUP BY shortcode, lower(domain) HAVING count(*) > 1').to_ary