diff --git a/db/migrate/20150223022001_set_missing_last_activity_at.rb b/db/migrate/20150223022001_set_missing_last_activity_at.rb
index 3a3adf18872..3f6d4d83474 100644
--- a/db/migrate/20150223022001_set_missing_last_activity_at.rb
+++ b/db/migrate/20150223022001_set_missing_last_activity_at.rb
@@ -4,6 +4,5 @@ class SetMissingLastActivityAt < ActiveRecord::Migration
   end
 
   def down
-    raise ActiveRecord::IrreversibleMigration
   end
 end