diff --git a/config/initializers/abstract_mysql2_adapter.rb b/config/initializers/abstract_mysql2_adapter.rb
new file mode 100644
index 0000000..5b99a6a
--- /dev/null
+++ b/config/initializers/abstract_mysql2_adapter.rb
@@ -0,0 +1,5 @@
+require 'active_record/connection_adapters/mysql2_adapter'
+
+class ActiveRecord::ConnectionAdapters::Mysql2Adapter
+  NATIVE_DATABASE_TYPES[:primary_key] = "int(11) auto_increment PRIMARY KEY"
+end
\ No newline at end of file