diff --git a/config/initializers/abstract_mysql2_adapter.rb.SAMPLE b/config/initializers/abstract_mysql2_adapter.rb.SAMPLE
new file mode 100644
--- /dev/null
+++ b/config/initializers/abstract_mysql2_adapter.rb.SAMPLE
@@ -0,0 +1,3 @@
+class ActiveRecord::ConnectionAdapters::Mysql2Adapter
+  NATIVE_DATABASE_TYPES[:primary_key] = "int(11) auto_increment PRIMARY KEY"
+end