diff --git a/.travis.yml b/.travis.yml
index d30a2a8..62105ca 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,9 @@
 sudo: false
 language: node_js
 node_js:
-  - "5.1.0"
-  - "4.2.2"
+  - "6"
+  - "5"
+  - "4"
 
 after_script:
   - './node_modules/.bin/nyc report --reporter=text-lcov | ./node_modules/.bin/coveralls'
diff --git a/package.json b/package.json
index 50b4fa1..929d733 100644
--- a/package.json
+++ b/package.json
@@ -1,10 +1,10 @@
 {
   "name": "postcss-attribute-selector-prefix",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "description": "A attribute selector prefixer for postcss",
   "main": "./lib/index.js",
   "scripts": {
-    "test": "xo ./src/*.js ./test/*.js && nyc ava",
+    "test": "eslint --format=node_modules/eslint-formatter-pretty ./src/*.js ./test/*.js && nyc ava",
     "clean": "rm -rf lib && mkdir lib",
     "build": "npm run clean && babel src/index.js --out-file lib/index.js && npm t",
     "prepublish": "npm run build",
@@ -39,18 +39,35 @@
       "babel-register"
     ]
   },
+  "eslintConfig": {
+    "plugins": [
+      "ava",
+      "xo",
+      "babel"
+    ],
+    "extends": [
+      "xo",
+      "plugin:xo/recommended",
+      "plugin:ava/recommended"
+    ]
+  },
   "dependencies": {
     "postcss": "^5.0.19"
   },
   "devDependencies": {
     "ava": "^0.14.0",
     "babel-cli": "^6.7.7",
-    "babel-plugin-add-module-exports": "^0.1.2",
+    "babel-plugin-add-module-exports": "^0.1.4",
     "babel-preset-node5": "^11.0.2",
     "babel-register": "^6.7.2",
     "coveralls": "^2.11.9",
+    "eslint": "^2.8.0",
+    "eslint-config-xo": "^0.13.0",
+    "eslint-formatter-pretty": "^0.2.1",
+    "eslint-plugin-ava": "^2.2.1",
+    "eslint-plugin-babel": "^3.2.0",
+    "eslint-plugin-xo": "^0.3.1",
     "nyc": "^6.4.0",
-    "updtr": "^0.1.10",
-    "xo": "^0.13.0"
+    "updtr": "^0.1.10"
   }
 }
diff --git a/src/index.js b/src/index.js
index 4749414..a805a7f 100644
--- a/src/index.js
+++ b/src/index.js
@@ -5,7 +5,7 @@ const filter = (filter, attributeSelector) => new RegExp(filter.map(attribut =>
 export default postcss.plugin('postcss-attribute-selector-prefix', options => {
 	return nodes => {
 		return nodes.walkRules(rule => {
-			rule.selector = rule.selector.replace(/\[.*?\]/g, (match) => {
+			rule.selector = rule.selector.replace(/\[.*?\]/g, match => {
 				if (options.prefix === undefined) {
 					return match;
 				}
diff --git a/test/test-plugin.js b/test/test-plugin.js
index b6086f8..16647e2 100644
--- a/test/test-plugin.js
+++ b/test/test-plugin.js
@@ -28,7 +28,7 @@ test('processing options prefix, filter and attribute selector', t => {
 	t.is(processing(fixtures, {prefix: 'test-', filter: ['class']}), expected);
 });
 
-test('processing options prefix, filter and attribute selector', t => {
+test('processing options prefix, filter and attribute selector witch indentical class filter', t => {
 	const expected = '.class, [type="text"], [alt*="class"] { color:red; }';
 	const fixtures = '.class, [type="text"], [alt*="class"] { color:red; }';
 	t.is(processing(fixtures, {prefix: 'test-', filter: ['class']}), expected);