diff --git a/packages/netlify-cms-ui-default/src/GoBackButton.js b/packages/netlify-cms-ui-default/src/GoBackButton.js
index b32e5dcd..5a151db3 100644
--- a/packages/netlify-cms-ui-default/src/GoBackButton.js
+++ b/packages/netlify-cms-ui-default/src/GoBackButton.js
@@ -2,7 +2,7 @@ import styled from '@emotion/styled';
 import React from 'react';
 import PropTypes from 'prop-types';
 
-import { colorsRaw } from './styles.js';
+import { colorsRaw } from './styles';
 import Icon from './Icon';
 
 const GoBackButtonStyle = styled.a`
diff --git a/packages/netlify-cms-ui-default/src/styles.jsx b/packages/netlify-cms-ui-default/src/styles.js
similarity index 100%
rename from packages/netlify-cms-ui-default/src/styles.jsx
rename to packages/netlify-cms-ui-default/src/styles.js