diff --git a/src/generators/background-colors.js b/src/generators/backgroundColors.js
similarity index 93%
rename from src/generators/background-colors.js
rename to src/generators/backgroundColors.js
index 133aa9a77..4909f41f7 100644
--- a/src/generators/background-colors.js
+++ b/src/generators/backgroundColors.js
@@ -1,5 +1,5 @@
 const _ = require('lodash')
-const defineClass = require('../util/define-class')
+const defineClass = require('../util/defineClass')
 
 function findColor(colors, color) {
   const colorsNormalized = _.mapKeys(colors, (value, key) => {
diff --git a/src/generators/flex.js b/src/generators/flex.js
index 99edf2f80..989ea607d 100644
--- a/src/generators/flex.js
+++ b/src/generators/flex.js
@@ -1,6 +1,6 @@
 const postcss = require('postcss')
 const _ = require('lodash')
-const defineClasses = require('../util/define-classes')
+const defineClasses = require('../util/defineClasses')
 
 module.exports = function () {
   return defineClasses({
diff --git a/src/generators/shadows.js b/src/generators/shadows.js
index e96a05210..322fef026 100644
--- a/src/generators/shadows.js
+++ b/src/generators/shadows.js
@@ -1,5 +1,5 @@
 const _ = require('lodash')
-const defineClass = require('../util/define-class')
+const defineClass = require('../util/defineClass')
 
 module.exports = function ({ shadows }) {
   return _(shadows).toPairs().map(([className, shadow]) => {
diff --git a/src/lib/generateUtilities.js b/src/lib/generateUtilities.js
index 520312863..bca4234f2 100644
--- a/src/lib/generateUtilities.js
+++ b/src/lib/generateUtilities.js
@@ -1,6 +1,6 @@
 const _ = require('lodash')
 const postcss = require('postcss')
-const backgroundColors = require('../generators/background-colors')
+const backgroundColors = require('../generators/backgroundColors')
 const shadows = require('../generators/shadows')
 const flex = require('../generators/flex')
 const cloneNodes = require('../util/cloneNodes')
diff --git a/src/util/define-class.js b/src/util/defineClass.js
similarity index 100%
rename from src/util/define-class.js
rename to src/util/defineClass.js
diff --git a/src/util/define-classes.js b/src/util/defineClasses.js
similarity index 83%
rename from src/util/define-classes.js
rename to src/util/defineClasses.js
index 1e14718eb..2999e954d 100644
--- a/src/util/define-classes.js
+++ b/src/util/defineClasses.js
@@ -1,6 +1,6 @@
 const postcss = require('postcss')
 const _ = require('lodash')
-const defineClass = require('./define-class')
+const defineClass = require('./defineClass')
 
 module.exports = function defineClasses(classes) {
     return _.map(classes, function(properties, className) {
diff --git a/tests/defineClass.test.js b/tests/defineClass.test.js
index aa018257e..21cd02488 100644
--- a/tests/defineClass.test.js
+++ b/tests/defineClass.test.js
@@ -1,7 +1,7 @@
 var postcss = require('postcss')
 var fs = require('fs')
 var _ = require('lodash')
-var defineClass = require('../src/util/define-class')
+var defineClass = require('../src/util/defineClass')
 
 var flexHelper = `.flex {
     display: flex
diff --git a/tests/defineClasses.test.js b/tests/defineClasses.test.js
index c58dd69c3..344f6221c 100644
--- a/tests/defineClasses.test.js
+++ b/tests/defineClasses.test.js
@@ -1,7 +1,7 @@
 var postcss = require('postcss')
 var fs = require('fs')
 var _ = require('lodash')
-var defineClasses = require('../src/util/define-classes')
+var defineClasses = require('../src/util/defineClasses')
 
 var config = {
     flex: {