diff --git a/dist/creditcard.js b/dist/creditcard.js
index 2d53eab..f57acc5 100644
--- a/dist/creditcard.js
+++ b/dist/creditcard.js
@@ -1,5 +1,5 @@
 /*!
- * creditcard.js v2.1.4
+ * creditcard.js v2.1.5
  * Created by @ContaAzul.
  *
  * Licensed MIT.
@@ -41,9 +41,7 @@ var CreditCard = function () {
 
       for (var i = 0; i < CREDIT_CARD_LIST.length; i++) {
         var creditcard = CREDIT_CARD_LIST[i];
-        var regex = new RegExp(creditcard.regexpFull);
-
-        if (regex.test(number)) return creditcard.name;
+        if (creditcard.regexpFull.test(number)) return creditcard.name;
       }
 
       return INVALID_CARD_MESSAGE;
@@ -92,28 +90,28 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 var CREDIT_CARD_LIST = [{
   name: 'Elo',
-  regexpFull: '^(401178|401179|431274|438935|451416|457393|457631|457632|504175|627780|636297|636368|(506699|5067[0-6]\d|50677[0-8])|(50900\d|5090[1-9]\d|509[1-9]\d{2})|65003[1-3]|(65003[5-9]|65004\d|65005[0-1])|(65040[5-9]|6504[1-3]\d)|(65048[5-9]|65049\d|6505[0-2]\d|65053[0-8])|(65054[1-9]|6505[5-8]\d|65059[0-8])|(65070\d|65071[0-8])|65072[0-7]|(65090[1-9]|65091\d|650920)|(65165[2-9]|6516[6-7]\d)|(65500\d|65501\d)|(65502[1-9]|6550[3-4]\d|65505[0-8]))[0-9]{10,12}'
+  regexpFull: /^(401178|401179|431274|438935|451416|457393|457631|457632|504175|627780|636297|636368|(506699|5067[0-6]\d|50677[0-8])|(50900\d|5090[1-9]\d|509[1-9]\d{2})|65003[1-3]|(65003[5-9]|65004\d|65005[0-1])|(65040[5-9]|6504[1-3]\d)|(65048[5-9]|65049\d|6505[0-2]\d|65053[0-8])|(65054[1-9]|6505[5-8]\d|65059[0-8])|(65070\d|65071[0-8])|65072[0-7]|(65090[1-9]|65091\d|650920)|(65165[2-9]|6516[6-7]\d)|(65500\d|65501\d)|(65502[1-9]|6550[3-4]\d|65505[0-8]))[0-9]{10,12}/
 }, {
   name: 'Diners',
-  regexpFull: '^3(?:0[0-5]|[68][0-9])[0-9]{11}$'
+  regexpFull: /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/
 }, {
   name: 'Discover',
-  regexpFull: '^6(?:011|5[0-9]{2}|4[4-9][0-9]{1}|(22(12[6-9]|1[3-9][0-9]|[2-8][0-9]{2}|9[01][0-9]|92[0-5]$)[0-9]{10}$))[0-9]{12}$'
+  regexpFull: /^6(?:011|5[0-9]{2}|4[4-9][0-9]{1}|(22(12[6-9]|1[3-9][0-9]|[2-8][0-9]{2}|9[01][0-9]|92[0-5]$)[0-9]{10}$))[0-9]{12}$/
 }, {
   name: 'Hipercard',
-  regexpFull: '^(38[0-9]{17}|60[0-9]{14})$'
+  regexpFull: /^(38[0-9]{17}|60[0-9]{14})$/
 }, {
   name: 'Amex',
-  regexpFull: '^3[47][0-9]{13}$'
+  regexpFull: /^3[47][0-9]{13}$/
 }, {
   name: 'Aura',
-  regexpFull: '^50[0-9]{14,17}$'
+  regexpFull: /^50[0-9]{14,17}$/
 }, {
   name: 'Mastercard',
-  regexpFull: '^(5[1-5][0-9]{14}|2221[0-9]{12}|222[2-9][0-9]{12}|22[3-9][0-9]{13}|2[3-6][0-9]{14}|27[01][0-9]{13}|2720[0-9]{12})$'
+  regexpFull: /^(5[1-5][0-9]{14}|2221[0-9]{12}|222[2-9][0-9]{12}|22[3-9][0-9]{13}|2[3-6][0-9]{14}|27[01][0-9]{13}|2720[0-9]{12})$/
 }, {
   name: 'Visa',
-  regexpFull: '^4[0-9]{12}(?:[0-9]{3})?$'
+  regexpFull: /^4[0-9]{12}(?:[0-9]{3})?$/
 }];
 
 var CreditCardList = function () {
diff --git a/dist/creditcard.min.js b/dist/creditcard.min.js
index f86c403..49c858a 100644
--- a/dist/creditcard.min.js
+++ b/dist/creditcard.min.js
@@ -1,7 +1,7 @@
 /*!
- * creditcard.js v2.1.4
+ * creditcard.js v2.1.5
  * Created by @ContaAzul.
  *
  * Licensed MIT.
  */
-(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.CreditCard=f()}})(function(){var define,module,exports;return function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({1:[function(require,module,exports){"use strict";var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor)}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor}}();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function")}}var CreditCardList=require("./creditCardList");var Luhn=require("./helpers/luhn");var CreditCard=function(){function CreditCard(){_classCallCheck(this,CreditCard);this.creditcardlist=new CreditCardList;this.luhn=new Luhn}_createClass(CreditCard,[{key:"retrieveCreditCardList",value:function retrieveCreditCardList(){return this.creditcardlist.retrieveCreditCardList()}},{key:"isValid",value:function isValid(number){return this.luhn.isValid(number)}},{key:"getCreditCardNameByNumber",value:function getCreditCardNameByNumber(number){var INVALID_CARD_MESSAGE="Credit card is invalid!";var CREDIT_CARD_LIST=this.retrieveCreditCardList();for(var i=0;i<CREDIT_CARD_LIST.length;i++){var creditcard=CREDIT_CARD_LIST[i];var regex=new RegExp(creditcard.regexpFull);if(regex.test(number))return creditcard.name}return INVALID_CARD_MESSAGE}},{key:"isSecurityCodeValid",value:function isSecurityCodeValid(number,code){var brand=this.getCreditCardNameByNumber(number);var numberLength=void 0;numberLength=brand==="Amex"?4:3;var regex=new RegExp("^[0-9]{"+numberLength+"}$");return regex.test(code)}},{key:"isExpirationDateValid",value:function isExpirationDateValid(paramMonth,paramYearn){var month=parseInt(paramMonth,10);var year=parseInt(paramYearn,10);var currentYear=(new Date).getFullYear();var currentMonth=(new Date).getMonth()+1;if(isNaN(month)||isNaN(year))return false;if(year===currentYear&&month<currentMonth)return false;if(month<1||month>12)return false;return!(year<1e3||year>=3e3)}}]);return CreditCard}();module.exports=CreditCard},{"./creditCardList":2,"./helpers/luhn":3}],2:[function(require,module,exports){"use strict";var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor)}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor}}();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function")}}var CREDIT_CARD_LIST=[{name:"Elo",regexpFull:"^(401178|401179|431274|438935|451416|457393|457631|457632|504175|627780|636297|636368|(506699|5067[0-6]d|50677[0-8])|(50900d|5090[1-9]d|509[1-9]d{2})|65003[1-3]|(65003[5-9]|65004d|65005[0-1])|(65040[5-9]|6504[1-3]d)|(65048[5-9]|65049d|6505[0-2]d|65053[0-8])|(65054[1-9]|6505[5-8]d|65059[0-8])|(65070d|65071[0-8])|65072[0-7]|(65090[1-9]|65091d|650920)|(65165[2-9]|6516[6-7]d)|(65500d|65501d)|(65502[1-9]|6550[3-4]d|65505[0-8]))[0-9]{10,12}"},{name:"Diners",regexpFull:"^3(?:0[0-5]|[68][0-9])[0-9]{11}$"},{name:"Discover",regexpFull:"^6(?:011|5[0-9]{2}|4[4-9][0-9]{1}|(22(12[6-9]|1[3-9][0-9]|[2-8][0-9]{2}|9[01][0-9]|92[0-5]$)[0-9]{10}$))[0-9]{12}$"},{name:"Hipercard",regexpFull:"^(38[0-9]{17}|60[0-9]{14})$"},{name:"Amex",regexpFull:"^3[47][0-9]{13}$"},{name:"Aura",regexpFull:"^50[0-9]{14,17}$"},{name:"Mastercard",regexpFull:"^(5[1-5][0-9]{14}|2221[0-9]{12}|222[2-9][0-9]{12}|22[3-9][0-9]{13}|2[3-6][0-9]{14}|27[01][0-9]{13}|2720[0-9]{12})$"},{name:"Visa",regexpFull:"^4[0-9]{12}(?:[0-9]{3})?$"}];var CreditCardList=function(){function CreditCardList(){_classCallCheck(this,CreditCardList);this.list=CREDIT_CARD_LIST}_createClass(CreditCardList,[{key:"retrieveCreditCardList",value:function retrieveCreditCardList(){return this.list}}]);return CreditCardList}();module.exports=CreditCardList},{}],3:[function(require,module,exports){"use strict";var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor)}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor}}();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function")}}var Luhn=function(){function Luhn(){_classCallCheck(this,Luhn);this.computed=[0,2,4,6,8,1,3,5,7,9]}_createClass(Luhn,[{key:"_sum",value:function _sum(number){var sum=0;var digit=0;var i=number.length;var even=true;while(i--){digit=Number(number[i]);sum+=(even=!even)?this.computed[digit]:digit}return sum}},{key:"isValid",value:function isValid(number){var regex=new RegExp("/[^0-9-s]+/");var digits=number;if(regex.test(digits))return false;digits=digits.replace(/\D/g,"");var sum=this._sum(digits);return sum>0&&sum%10===0}}]);return Luhn}();module.exports=Luhn},{}]},{},[1])(1)});
\ No newline at end of file
+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.CreditCard=f()}})(function(){var define,module,exports;return function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({1:[function(require,module,exports){"use strict";var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor)}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor}}();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function")}}var CreditCardList=require("./creditCardList");var Luhn=require("./helpers/luhn");var CreditCard=function(){function CreditCard(){_classCallCheck(this,CreditCard);this.creditcardlist=new CreditCardList;this.luhn=new Luhn}_createClass(CreditCard,[{key:"retrieveCreditCardList",value:function retrieveCreditCardList(){return this.creditcardlist.retrieveCreditCardList()}},{key:"isValid",value:function isValid(number){return this.luhn.isValid(number)}},{key:"getCreditCardNameByNumber",value:function getCreditCardNameByNumber(number){var INVALID_CARD_MESSAGE="Credit card is invalid!";var CREDIT_CARD_LIST=this.retrieveCreditCardList();for(var i=0;i<CREDIT_CARD_LIST.length;i++){var creditcard=CREDIT_CARD_LIST[i];if(creditcard.regexpFull.test(number))return creditcard.name}return INVALID_CARD_MESSAGE}},{key:"isSecurityCodeValid",value:function isSecurityCodeValid(number,code){var brand=this.getCreditCardNameByNumber(number);var numberLength=void 0;numberLength=brand==="Amex"?4:3;var regex=new RegExp("^[0-9]{"+numberLength+"}$");return regex.test(code)}},{key:"isExpirationDateValid",value:function isExpirationDateValid(paramMonth,paramYearn){var month=parseInt(paramMonth,10);var year=parseInt(paramYearn,10);var currentYear=(new Date).getFullYear();var currentMonth=(new Date).getMonth()+1;if(isNaN(month)||isNaN(year))return false;if(year===currentYear&&month<currentMonth)return false;if(month<1||month>12)return false;return!(year<1e3||year>=3e3)}}]);return CreditCard}();module.exports=CreditCard},{"./creditCardList":2,"./helpers/luhn":3}],2:[function(require,module,exports){"use strict";var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor)}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor}}();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function")}}var CREDIT_CARD_LIST=[{name:"Elo",regexpFull:/^(401178|401179|431274|438935|451416|457393|457631|457632|504175|627780|636297|636368|(506699|5067[0-6]\d|50677[0-8])|(50900\d|5090[1-9]\d|509[1-9]\d{2})|65003[1-3]|(65003[5-9]|65004\d|65005[0-1])|(65040[5-9]|6504[1-3]\d)|(65048[5-9]|65049\d|6505[0-2]\d|65053[0-8])|(65054[1-9]|6505[5-8]\d|65059[0-8])|(65070\d|65071[0-8])|65072[0-7]|(65090[1-9]|65091\d|650920)|(65165[2-9]|6516[6-7]\d)|(65500\d|65501\d)|(65502[1-9]|6550[3-4]\d|65505[0-8]))[0-9]{10,12}/},{name:"Diners",regexpFull:/^3(?:0[0-5]|[68][0-9])[0-9]{11}$/},{name:"Discover",regexpFull:/^6(?:011|5[0-9]{2}|4[4-9][0-9]{1}|(22(12[6-9]|1[3-9][0-9]|[2-8][0-9]{2}|9[01][0-9]|92[0-5]$)[0-9]{10}$))[0-9]{12}$/},{name:"Hipercard",regexpFull:/^(38[0-9]{17}|60[0-9]{14})$/},{name:"Amex",regexpFull:/^3[47][0-9]{13}$/},{name:"Aura",regexpFull:/^50[0-9]{14,17}$/},{name:"Mastercard",regexpFull:/^(5[1-5][0-9]{14}|2221[0-9]{12}|222[2-9][0-9]{12}|22[3-9][0-9]{13}|2[3-6][0-9]{14}|27[01][0-9]{13}|2720[0-9]{12})$/},{name:"Visa",regexpFull:/^4[0-9]{12}(?:[0-9]{3})?$/}];var CreditCardList=function(){function CreditCardList(){_classCallCheck(this,CreditCardList);this.list=CREDIT_CARD_LIST}_createClass(CreditCardList,[{key:"retrieveCreditCardList",value:function retrieveCreditCardList(){return this.list}}]);return CreditCardList}();module.exports=CreditCardList},{}],3:[function(require,module,exports){"use strict";var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor)}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor}}();function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function")}}var Luhn=function(){function Luhn(){_classCallCheck(this,Luhn);this.computed=[0,2,4,6,8,1,3,5,7,9]}_createClass(Luhn,[{key:"_sum",value:function _sum(number){var sum=0;var digit=0;var i=number.length;var even=true;while(i--){digit=Number(number[i]);sum+=(even=!even)?this.computed[digit]:digit}return sum}},{key:"isValid",value:function isValid(number){var regex=new RegExp("/[^0-9-s]+/");var digits=number;if(regex.test(digits))return false;digits=digits.replace(/\D/g,"");var sum=this._sum(digits);return sum>0&&sum%10===0}}]);return Luhn}();module.exports=Luhn},{}]},{},[1])(1)});
\ No newline at end of file
diff --git a/package.json b/package.json
index c287a62..633848b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "creditcard.js",
-  "version": "2.1.4",
+  "version": "2.1.5",
   "description": "A simple library for credit-card validation in JavaScript",
   "main": "dist/creditcard.min.js",
   "repository": "ContaAzul/creditcard.js",