diff --git a/README.md b/README.md
index e9bef50..6da991e 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,14 @@ let form = document.querySelector('#form')
 new DirtyForm(form)
 ```
 
+If you want to customize the message:
+
+```javascript
+new DirtyForm(form, {
+  message: 'You have unsaved changes. Are you sure you want to leave?',
+})
+```
+
 ### Stimulus example
 
 ```html
diff --git a/dist/dirty-form.js b/dist/dirty-form.js
index 0f44937..3d41460 100644
--- a/dist/dirty-form.js
+++ b/dist/dirty-form.js
@@ -116,12 +116,15 @@ var DirtyForm =
 /*#__PURE__*/
 function () {
   function DirtyForm(form) {
+    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+
     _classCallCheck(this, DirtyForm);
 
     this.form = form;
     this.isDirty = false;
     this.initialValues = {};
     this.fields = [].concat(_toConsumableArray(this.form.elements), _toConsumableArray(this.form.querySelectorAll('trix-editor')));
+    this.message = options['message'] || 'You have unsaved changes!';
     this.setupFields();
     this.setFormHandlers();
   }
@@ -158,13 +161,13 @@ function () {
 
       window.onbeforeunload = function () {
         if (_this2.isDirty) {
-          return 'You have unsaved changes!';
+          return _this2.message;
         }
       };
 
       if (typeof Turbolinks !== 'undefined') {
         document.addEventListener('turbolinks:before-visit', function (event) {
-          if (_this2.isDirty && !confirm('You have unsaved changes!')) {
+          if (_this2.isDirty && !confirm(_this2.message)) {
             event.preventDefault();
           } else {
             _this2.isDirty = false;
diff --git a/dist/dirty-form.min.js b/dist/dirty-form.min.js
index d2b1a08..129aaae 100644
--- a/dist/dirty-form.min.js
+++ b/dist/dirty-form.min.js
@@ -1 +1 @@
-!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.DirtyForm=t():e.DirtyForm=t()}(this,function(){return function(e){var t={};function n(r){if(t[r])return t[r].exports;var i=t[r]={i:r,l:!1,exports:{}};return e[r].call(i.exports,i,i.exports,n),i.l=!0,i.exports}return n.m=e,n.c=t,n.d=function(e,t,r){n.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:r})},n.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},n.t=function(e,t){if(1&t&&(e=n(e)),8&t)return e;if(4&t&&"object"==typeof e&&e&&e.__esModule)return e;var r=Object.create(null);if(n.r(r),Object.defineProperty(r,"default",{enumerable:!0,value:e}),2&t&&"string"!=typeof e)for(var i in e)n.d(r,i,function(t){return e[t]}.bind(null,i));return r},n.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(t,"a",t),t},n.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},n.p="",n(n.s=0)}([function(e,t){function n(e){return function(e){if(Array.isArray(e)){for(var t=0,n=new Array(e.length);t<e.length;t++)n[t]=e[t];return n}}(e)||function(e){if(Symbol.iterator in Object(e)||"[object Arguments]"===Object.prototype.toString.call(e))return Array.from(e)}(e)||function(){throw new TypeError("Invalid attempt to spread non-iterable instance")}()}function r(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}var i=function(){function e(t){!function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}(this,e),this.form=t,this.isDirty=!1,this.initialValues={},this.fields=[].concat(n(this.form.elements),n(this.form.querySelectorAll("trix-editor"))),this.setupFields(),this.setFormHandlers()}var t,i,o;return t=e,(i=[{key:"setupFields",value:function(){var e=this;this.fields.forEach(function(t){t.name&&"submit"!=t.type&&"button"!=t.type&&"hidden"!=t.type&&(e.initialValues[t.name]=t.value,"TRIX-EDITOR"==t.nodeName?t.addEventListener("trix-change",e.checkValue.bind(e)):(t.addEventListener("change",e.checkValue.bind(e)),t.addEventListener("input",e.checkValue.bind(e))))})}},{key:"setFormHandlers",value:function(){var e=this;window.addEventListener("submit",this.handleSubmit.bind(this)),this.form.addEventListener("submit",this.handleSubmit.bind(this)),window.onbeforeunload=function(){if(e.isDirty)return"You have unsaved changes!"},"undefined"!=typeof Turbolinks&&document.addEventListener("turbolinks:before-visit",function(t){e.isDirty&&!confirm("You have unsaved changes!")?t.preventDefault():e.isDirty=!1})}},{key:"checkValue",value:function(e){var t=e.target;this.initialValues[t.name]!=t.value&&(this.isDirty=!0)}},{key:"handleSubmit",value:function(){this.isDirty=!1}}])&&r(t.prototype,i),o&&r(t,o),e}();e.exports=i}])});
\ No newline at end of file
+!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.DirtyForm=t():e.DirtyForm=t()}(this,function(){return function(e){var t={};function n(r){if(t[r])return t[r].exports;var i=t[r]={i:r,l:!1,exports:{}};return e[r].call(i.exports,i,i.exports,n),i.l=!0,i.exports}return n.m=e,n.c=t,n.d=function(e,t,r){n.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:r})},n.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},n.t=function(e,t){if(1&t&&(e=n(e)),8&t)return e;if(4&t&&"object"==typeof e&&e&&e.__esModule)return e;var r=Object.create(null);if(n.r(r),Object.defineProperty(r,"default",{enumerable:!0,value:e}),2&t&&"string"!=typeof e)for(var i in e)n.d(r,i,function(t){return e[t]}.bind(null,i));return r},n.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(t,"a",t),t},n.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},n.p="",n(n.s=0)}([function(e,t){function n(e){return function(e){if(Array.isArray(e)){for(var t=0,n=new Array(e.length);t<e.length;t++)n[t]=e[t];return n}}(e)||function(e){if(Symbol.iterator in Object(e)||"[object Arguments]"===Object.prototype.toString.call(e))return Array.from(e)}(e)||function(){throw new TypeError("Invalid attempt to spread non-iterable instance")}()}function r(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}var i=function(){function e(t){var r=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};!function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}(this,e),this.form=t,this.isDirty=!1,this.initialValues={},this.fields=[].concat(n(this.form.elements),n(this.form.querySelectorAll("trix-editor"))),this.message=r.message||"You have unsaved changes!",this.setupFields(),this.setFormHandlers()}var t,i,o;return t=e,(i=[{key:"setupFields",value:function(){var e=this;this.fields.forEach(function(t){t.name&&"submit"!=t.type&&"button"!=t.type&&"hidden"!=t.type&&(e.initialValues[t.name]=t.value,"TRIX-EDITOR"==t.nodeName?t.addEventListener("trix-change",e.checkValue.bind(e)):(t.addEventListener("change",e.checkValue.bind(e)),t.addEventListener("input",e.checkValue.bind(e))))})}},{key:"setFormHandlers",value:function(){var e=this;window.addEventListener("submit",this.handleSubmit.bind(this)),this.form.addEventListener("submit",this.handleSubmit.bind(this)),window.onbeforeunload=function(){if(e.isDirty)return e.message},"undefined"!=typeof Turbolinks&&document.addEventListener("turbolinks:before-visit",function(t){e.isDirty&&!confirm(e.message)?t.preventDefault():e.isDirty=!1})}},{key:"checkValue",value:function(e){var t=e.target;this.initialValues[t.name]!=t.value&&(this.isDirty=!0)}},{key:"handleSubmit",value:function(){this.isDirty=!1}}])&&r(t.prototype,i),o&&r(t,o),e}();e.exports=i}])});
\ No newline at end of file
diff --git a/package.json b/package.json
index b666392..d2a6002 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "dirty-form",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "A lightweight plugin to prevent losing data when editing forms. No dependencies.",
   "main": "dist/dirty-form.js",
   "files": [
diff --git a/src/dirty-form.js b/src/dirty-form.js
index cf40b80..3ffdfe3 100644
--- a/src/dirty-form.js
+++ b/src/dirty-form.js
@@ -1,5 +1,5 @@
 class DirtyForm {
-  constructor(form) {
+  constructor(form, options = {}) {
     this.form = form;
     this.isDirty = false;
     this.initialValues = {};
@@ -7,6 +7,7 @@ class DirtyForm {
       ...this.form.elements,
       ...this.form.querySelectorAll('trix-editor')
     ]
+    this.message = options['message'] || 'You have unsaved changes!';
 
     this.setupFields();
     this.setFormHandlers();
@@ -39,12 +40,12 @@ class DirtyForm {
     // Handle leaving page
     window.onbeforeunload = () => {
       if (this.isDirty) {
-        return 'You have unsaved changes!';
+        return this.message;
       }
     };
     if (typeof Turbolinks !== 'undefined') {
       document.addEventListener('turbolinks:before-visit', (event) => {
-        if (this.isDirty && !confirm('You have unsaved changes!')) {
+        if (this.isDirty && !confirm(this.message)) {
           event.preventDefault()
         } else {
           this.isDirty = false;