diff --git a/lib/generators/redmine_plugin_migration/redmine_plugin_migration_generator.rb b/lib/generators/redmine_plugin_migration/redmine_plugin_migration_generator.rb
index ed3d875..2926cf0 100644
--- a/lib/generators/redmine_plugin_migration/redmine_plugin_migration_generator.rb
+++ b/lib/generators/redmine_plugin_migration/redmine_plugin_migration_generator.rb
@@ -1,3 +1,22 @@
+# frozen_string_literal: true
+
+# Redmine - project management software
+# Copyright (C) 2006-2019  Jean-Philippe Lang
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
 class RedminePluginMigrationGenerator < Rails::Generators::NamedBase
   include Rails::Generators::Migration
 
diff --git a/test/integration/wiki_test.rb b/test/integration/wiki_test.rb
index bbf8dba..0a04cc2 100644
--- a/test/integration/wiki_test.rb
+++ b/test/integration/wiki_test.rb
@@ -1,3 +1,22 @@
+# frozen_string_literal: true
+
+# Redmine - project management software
+# Copyright (C) 2006-2019  Jean-Philippe Lang
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
 require File.expand_path('../../test_helper', __FILE__)
 
 class WikiIntegrationTest < Redmine::IntegrationTest
@@ -53,4 +72,3 @@ class WikiIntegrationTest < Redmine::IntegrationTest
   end
 
 end
-