diff --git a/index.js b/index.js
index 5ac202b..eb31696 100644
--- a/index.js
+++ b/index.js
@@ -7,12 +7,22 @@
 
 'use strict';
 
+var re = {
+  capital: /[A-Z]|[\u00C0-\u00D6\u00D8-\u00DD]/,
+  small: /[a-z]|[\u00DF-\u00F6\u00F8-\u00FF]/,
+  space: /[ \t]/,
+  nonWord: /[^A-Za-z0-9\u00C0-\u00D6\u00D8-\u00DD\u00DF-\u00F6\u00F8-\u00FF]/
+};
+
+var camelCase = new RegExp('(' + re.small.source + ')(' + re.capital.source + ')', 'g');
+var spaceOrNonWord = new RegExp(re.space.source + '|' + re.nonWord.source, 'g');
+
 module.exports = function dashify(str) {
   if (typeof str !== 'string') {
     throw new TypeError('expected a string');
   }
-  str = str.replace(/([a-z])([A-Z])/g, '$1-$2');
-  str = str.replace(/[ \t\W]/g, '-');
+  str = str.replace(camelCase, '$1-$2');
+  str = str.replace(spaceOrNonWord, '-');
   str = str.replace(/^-+|-+$/g, '');
   return str.toLowerCase();
 };
diff --git a/package.json b/package.json
index 8cde6a7..07e1ff3 100644
--- a/package.json
+++ b/package.json
@@ -17,9 +17,10 @@
     "node": ">=0.10.0"
   },
   "scripts": {
-    "test": "mocha"
+    "test": "eslint index.js & mocha"
   },
   "devDependencies": {
+    "eslint": "^2.11.1",
     "gulp-format-md": "^0.1.9",
     "mocha": "^2.5.1"
   },
diff --git a/test.js b/test.js
index 04a1cba..0be1efc 100644
--- a/test.js
+++ b/test.js
@@ -48,6 +48,11 @@ describe('dashify', function() {
   it('should work when leading character is uppercase:', function() {
     assert.strictEqual(dashify('Foo barBaz quux'), 'foo-bar-baz-quux');
   });
+  
+  it('should keep Latin Unicode characters in the transformed string:', function() {
+    assert.strictEqual(dashify('São Tomé and Príncipe'), 'são-tomé-and-príncipe');
+    assert.strictEqual(dashify('æçÐo Test Ø'), 'æç-ðo-test-ø');
+  });
 
   it('should throw an error if a string is not passed:', function(cb) {
     try {