diff --git a/src/components/Sidebar.js b/src/components/Sidebar.js
index ab846823c..af649b815 100644
--- a/src/components/Sidebar.js
+++ b/src/components/Sidebar.js
@@ -21,7 +21,7 @@ const renderNav = (page, index) => (
 );
 
 const Sidebar = ({ className, pages, isOpen, toggle }) => (
-  <aside className={cx(styles.Sidebar, className, { [styles.isOpen]: isOpen })}>
+  <aside className={cx(styles.sidebar, className, { [styles.isOpen]: isOpen })}>
     <div className={styles.top}>
       <h3>Pages</h3>
       <button