diff --git a/editors/wymeditor.inc b/editors/wymeditor.inc
index 95c4d21..0094c2d 100644
--- a/editors/wymeditor.inc
+++ b/editors/wymeditor.inc
@@ -172,7 +172,8 @@ function wysiwyg_wymeditor_settings($editor, $config, $theme) {
   if (isset($config['css_setting'])) {
     if ($config['css_setting'] == 'theme') {
       // WYMeditor only supports one CSS file currently.
-      $settings['stylesheet'] = reset(wysiwyg_get_css());
+      $css = wysiwyg_get_css();
+      $settings['stylesheet'] = reset($css);
     }
     elseif ($config['css_setting'] == 'self' && isset($config['css_path'])) {
       $settings['stylesheet'] = strtr($config['css_path'], array('%b' => base_path(), '%t' => path_to_theme()));