diff --git a/inc/roots-cleanup.php b/inc/roots-cleanup.php
index 5b85cd7..1c240f0 100644
--- a/inc/roots-cleanup.php
+++ b/inc/roots-cleanup.php
@@ -65,7 +65,19 @@ function roots_fix_duplicate_subfolder_urls($input) {
   return $output;
 }
 
-if (!is_admin() && !in_array($GLOBALS['pagenow'], array('wp-login.php', 'wp-register.php'))) {
+// remove root relative URLs on any attachments in the feed
+function roots_root_relative_attachment_urls() {
+  if (!is_feed()) {
+    add_filter('wp_get_attachment_url', 'roots_root_relative_url');
+    add_filter('wp_get_attachment_link', 'roots_root_relative_url');
+  }
+}
+
+function enable_root_relative_urls() {
+  return !(is_admin() && in_array($GLOBALS['pagenow'], array('wp-login.php', 'wp-register.php'))) && ROOT_RELATIVE_URLS;
+}
+
+if (enable_root_relative_urls()) {
   $tags = array(
     'bloginfo_url',
     'theme_root_uri',
@@ -91,18 +103,10 @@ if (!is_admin() && !in_array($GLOBALS['pagenow'], array('wp-login.php', 'wp-regi
 
   add_filter('script_loader_src', 'roots_fix_duplicate_subfolder_urls');
   add_filter('style_loader_src', 'roots_fix_duplicate_subfolder_urls');
-}
 
-// remove root relative URLs on any attachments in the feed
-function roots_root_relative_attachment_urls() {
-  if (!is_feed()) {
-    add_filter('wp_get_attachment_url', 'roots_root_relative_url');
-    add_filter('wp_get_attachment_link', 'roots_root_relative_url');
-  }
+  add_action('pre_get_posts', 'roots_root_relative_attachment_urls');
 }
 
-add_action('pre_get_posts', 'roots_root_relative_attachment_urls');
-
 // set lang="en" as default (rather than en-US)
 function roots_language_attributes() {
   $attributes = array();
diff --git a/inc/roots-config.php b/inc/roots-config.php
index a21932b..8f797ea 100644
--- a/inc/roots-config.php
+++ b/inc/roots-config.php
@@ -1,5 +1,6 @@
 <?php
 
+define('ROOT_RELATIVE_URLS',   true);
 define('POST_EXCERPT_LENGTH',  40);
 define('BOOTSTRAP_RESPONSIVE', true);
 define('WRAP_CLASSES',         'container');