Sequelize underscore not working

Hello my model looks like this

'use strict';
module.exports = function(sequelize, DataTypes) {
  var clinicians = sequelize.define('clinicians', {
   /* field list */
  }, {
    createdAt: "created_at",
    updatedAt: 'updated_at',
    deletedAt: false,
    underscored: true,
    classMethods: {
      associate: function(models) {
        // associations can be defined here
      }
    }
  });
  clinicians.options.underscored = true;
  return clinicians;
};

and i get this error

Unhandled rejection SequelizeBaseError: ER_BAD_FIELD_ERROR: Unknown column 'created_at' in 'field list'

via Travis Delly