diff --git a/models/SolrSearchField.php b/models/SolrSearchField.php
index 7fdae282..04ca19c7 100644
--- a/models/SolrSearchField.php
+++ b/models/SolrSearchField.php
@@ -159,7 +159,7 @@ public function getOriginalLabel()
      *
      * @return string The facet label.
      */
-    public function beforeSave()
+    public function beforeSave($args)
     {
         $label = trim($this->label);
         if (empty($label)) $this->label = $this->getOriginalLabel();