diff --git a/db/migrate/20111012223006_create_permissions.rb b/db/migrate/20111012223006_create_permissions.rb
index 8001623a4..7d68b13fa 100644
--- a/db/migrate/20111012223006_create_permissions.rb
+++ b/db/migrate/20111012223006_create_permissions.rb
@@ -1,15 +1,10 @@
 class CreatePermissions < ActiveRecord::Migration
-  def self.up
+  def change
     create_table :permissions do |t|
-      t.integer :id
       t.integer :right_id
       t.integer :role_id
 
       t.timestamps
     end
   end
-
-  def self.down
-    drop_table :permissions
-  end
 end
diff --git a/db/migrate/20111012223306_create_roles.rb b/db/migrate/20111012223306_create_roles.rb
index b5693219d..3eca524eb 100644
--- a/db/migrate/20111012223306_create_roles.rb
+++ b/db/migrate/20111012223306_create_roles.rb
@@ -1,5 +1,5 @@
 class CreateRoles < ActiveRecord::Migration
-  def self.up
+  def change
     create_table :roles do |t|
       t.integer :id
       t.string :name
@@ -7,8 +7,4 @@ class CreateRoles < ActiveRecord::Migration
       t.timestamps
     end
   end
-
-  def self.down
-    drop_table :roles
-  end
 end
diff --git a/db/migrate/20111013150125_create_project_to_repositories.rb b/db/migrate/20111013150125_create_project_to_repositories.rb
index 148561c4c..46b5d3773 100644
--- a/db/migrate/20111013150125_create_project_to_repositories.rb
+++ b/db/migrate/20111013150125_create_project_to_repositories.rb
@@ -1,15 +1,10 @@
 class CreateProjectToRepositories < ActiveRecord::Migration
-  def self.up
+  def change
     create_table :project_to_repositories do |t|
-      t.integer :id
       t.integer :project_id
       t.integer :repository_id
 
       t.timestamps
     end
   end
-
-  def self.down
-    drop_table :project_to_repositories
-  end
 end