diff --git a/CHANGELOG.md b/CHANGELOG.md
index 811af81..5213132 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,5 @@
 ### HEAD
+* Remove additional widget classes
 * Move `/assets/css/less/` to `/assets/less/`
 * Add wrapper templates filter
 * Fix relative external URLs issue
diff --git a/lib/cleanup.php b/lib/cleanup.php
index 4555077..f25c573 100644
--- a/lib/cleanup.php
+++ b/lib/cleanup.php
@@ -395,45 +395,6 @@ function roots_change_mce_options($options) {
 }
 add_filter('tiny_mce_before_init', 'roots_change_mce_options');
 
-/**
- * Add additional classes onto widgets
- *
- * @link http://wordpress.org/support/topic/how-to-first-and-last-css-classes-for-sidebar-widgets
- */
-function roots_widget_first_last_classes($params) {
-  global $my_widget_num;
-
-  $this_id = $params[0]['id'];
-  $arr_registered_widgets = wp_get_sidebars_widgets();
-
-  if (!$my_widget_num) {
-    $my_widget_num = array();
-  }
-
-  if (!isset($arr_registered_widgets[$this_id]) || !is_array($arr_registered_widgets[$this_id])) {
-    return $params;
-  }
-
-  if (isset($my_widget_num[$this_id])) {
-    $my_widget_num[$this_id] ++;
-  } else {
-    $my_widget_num[$this_id] = 1;
-  }
-
-  $class = 'class="widget-' . $my_widget_num[$this_id] . ' ';
-
-  if ($my_widget_num[$this_id] == 1) {
-    $class .= 'widget-first ';
-  } elseif ($my_widget_num[$this_id] == count($arr_registered_widgets[$this_id])) {
-    $class .= 'widget-last ';
-  }
-
-  $params[0]['before_widget'] = preg_replace('/class=\"/', "$class", $params[0]['before_widget'], 1);
-
-  return $params;
-}
-add_filter('dynamic_sidebar_params', 'roots_widget_first_last_classes');
-
 /**
  * Redirects search results from /?s=query to /search/query/, converts %20 to +
  *