diff --git a/wysiwyg.module b/wysiwyg.module
index aba3920..98c9264 100644
--- a/wysiwyg.module
+++ b/wysiwyg.module
@@ -654,13 +654,8 @@ function wysiwyg_get_css() {
 
   $files = array();
   foreach (drupal_add_css() as $filepath => $info) {
-    if ($info['group'] >= CSS_THEME && $info['media'] != 'print') {
-      if ($info['type'] == 'external') {
-        $files[] = $filepath;
-      }
-      elseif (file_exists($filepath)) {
-        $files[] = base_path() . $filepath;
-      }
+    if ($info['group'] >= CSS_THEME && $info['type'] != 'inline' && $info['media'] != 'print') {
+      $files[] = file_create_url($filepath);
     }
   }
   return $files;