diff --git a/functions.php b/functions.php
index 2ca45c0..0f5b9f7 100644
--- a/functions.php
+++ b/functions.php
@@ -12,6 +12,7 @@ require_once locate_template('/lib/cleanup.php');         // Cleanup
 require_once locate_template('/lib/nav.php');             // Custom nav modifications
 require_once locate_template('/lib/comments.php');        // Custom comments modifications
 require_once locate_template('/lib/rewrites.php');        // URL rewriting for assets
+require_once locate_template('/lib/relative-urls.php');   // Root relative URLs
 require_once locate_template('/lib/widgets.php');         // Sidebars and widgets
 require_once locate_template('/lib/scripts.php');         // Scripts and stylesheets
 require_once locate_template('/lib/custom.php');          // Custom functions
diff --git a/lib/cleanup.php b/lib/cleanup.php
index 7f134ed..0b16711 100644
--- a/lib/cleanup.php
+++ b/lib/cleanup.php
@@ -126,54 +126,6 @@ function roots_body_class($classes) {
 }
 add_filter('body_class', 'roots_body_class');
 
-/**
- * Root relative URLs
- *
- * WordPress likes to use absolute URLs on everything - let's clean that up.
- * Inspired by http://www.456bereastreet.com/archive/201010/how_to_make_wordpress_urls_root_relative/
- *
- * You can enable/disable this feature in config.php:
- * current_theme_supports('root-relative-urls');
- *
- * @author Scott Walkinshaw <scott.walkinshaw@gmail.com>
- */
-function roots_root_relative_url($input) {
-  preg_match('|https?://([^/]+)(/.*)|i', $input, $matches);
-
-  if (isset($matches[1]) && isset($matches[2]) && $matches[1] === $_SERVER['SERVER_NAME']) {
-    return wp_make_link_relative($input);
-  } else {
-    return $input;
-  }
-}
-
-function roots_enable_root_relative_urls() {
-  return !(is_admin() || in_array($GLOBALS['pagenow'], array('wp-login.php', 'wp-register.php'))) && current_theme_supports('root-relative-urls');
-}
-
-if (roots_enable_root_relative_urls()) {
-  $root_rel_filters = array(
-    'bloginfo_url',
-    'the_permalink',
-    'wp_list_pages',
-    'wp_list_categories',
-    'roots_wp_nav_menu_item',
-    'the_content_more_link',
-    'the_tags',
-    'get_pagenum_link',
-    'get_comment_link',
-    'month_link',
-    'day_link',
-    'year_link',
-    'tag_link',
-    'the_author_posts_link',
-    'script_loader_src',
-    'style_loader_src'
-  );
-
-  add_filters($root_rel_filters, 'roots_root_relative_url');
-}
-
 /**
  * Wrap embedded media as suggested by Readability
  *
diff --git a/lib/relative-urls.php b/lib/relative-urls.php
new file mode 100644
index 0000000..56ee615
--- /dev/null
+++ b/lib/relative-urls.php
@@ -0,0 +1,48 @@
+<?php
+/**
+ * Root relative URLs
+ *
+ * WordPress likes to use absolute URLs on everything - let's clean that up.
+ * Inspired by http://www.456bereastreet.com/archive/201010/how_to_make_wordpress_urls_root_relative/
+ *
+ * You can enable/disable this feature in config.php:
+ * current_theme_supports('root-relative-urls');
+ *
+ * @author Scott Walkinshaw <scott.walkinshaw@gmail.com>
+ */
+function roots_root_relative_url($input) {
+  preg_match('|https?://([^/]+)(/.*)|i', $input, $matches);
+
+  if (isset($matches[1]) && isset($matches[2]) && $matches[1] === $_SERVER['SERVER_NAME']) {
+    return wp_make_link_relative($input);
+  } else {
+    return $input;
+  }
+}
+
+function roots_enable_root_relative_urls() {
+  return !(is_admin() || in_array($GLOBALS['pagenow'], array('wp-login.php', 'wp-register.php'))) && current_theme_supports('root-relative-urls');
+}
+
+if (roots_enable_root_relative_urls()) {
+  $root_rel_filters = array(
+    'bloginfo_url',
+    'the_permalink',
+    'wp_list_pages',
+    'wp_list_categories',
+    'roots_wp_nav_menu_item',
+    'the_content_more_link',
+    'the_tags',
+    'get_pagenum_link',
+    'get_comment_link',
+    'month_link',
+    'day_link',
+    'year_link',
+    'tag_link',
+    'the_author_posts_link',
+    'script_loader_src',
+    'style_loader_src'
+  );
+
+  add_filters($root_rel_filters, 'roots_root_relative_url');
+}