diff --git a/db/migrate/20180719033247_add_confidential_to_doorkeeper_application.rb b/db/migrate/20180719033247_add_confidential_to_doorkeeper_application.rb
index 3ae102431..4e209428e 100644
--- a/db/migrate/20180719033247_add_confidential_to_doorkeeper_application.rb
+++ b/db/migrate/20180719033247_add_confidential_to_doorkeeper_application.rb
@@ -1,5 +1,6 @@
 class AddConfidentialToDoorkeeperApplication < ActiveRecord::Migration[5.1]
   def change
+    return if ActiveRecord::Base.connection.column_exists?(:oauth_applications, :confidential)
     add_column(
       :oauth_applications,
       :confidential,