diff --git editors/markitup.inc editors/markitup.inc
index 1b030f8..faa68b2 100644
--- editors/markitup.inc
+++ editors/markitup.inc
@@ -97,9 +97,11 @@ function wysiwyg_markitup_themes($editor, $profile) {
  *   Drupal.settings.wysiwyg.configs.{editor}
  */
 function wysiwyg_markitup_settings($editor, $config, $theme) {
-  // Whoever is guilty for adding this horrible CSS-file-without-filepath
-  // override "feature" to Drupal core... stand in the corner!
-  drupal_add_css($editor['library path'] . '/markitup/skins/' . $theme . '/style.css', 'theme');
+  drupal_add_css($editor['library path'] . '/markitup/skins/' . $theme . '/style.css', array(
+    'basename' => 'markitup.' . $theme . '.style.css',
+    'group' => CSS_THEME,
+    )
+  );
 
   $settings = array(
     'root' => base_path() . $editor['library path'] . '/markitup/',