diff --git a/uikit.theme b/uikit.theme
index d508073..3830a6b 100644
--- a/uikit.theme
+++ b/uikit.theme
@@ -5,12 +5,10 @@
  * Conditional logic and data processing for the UIkit theme.
  */
 
-use Drupal\uikit\UIkit;
-
 /**
  * Load UIkit's include files for theme processing.
  */
-UIkit::loadIncludeFile('inc', 'uikit', 'theme', 'preprocess', 'includes');
-UIkit::loadIncludeFile('inc', 'uikit', 'theme', 'process', 'includes');
-UIkit::loadIncludeFile('inc', 'uikit', 'theme', 'theme', 'includes');
-UIkit::loadIncludeFile('inc', 'uikit', 'theme', 'alter', 'includes');
+include_once 'includes/preprocess.inc';
+include_once 'includes/process.inc';
+include_once 'includes/theme.inc';
+include_once 'includes/alter.inc';