diff --git a/model/SqlDbDriver.php b/model/SqlDbDriver.php
index ec62c49..1952136 100644
--- a/model/SqlDbDriver.php
+++ b/model/SqlDbDriver.php
@@ -109,9 +109,6 @@ abstract class SqlDbDriver extends DbDriver
     public function quoteIdentifier($ident)
     {
         $ident = explode('.', $ident);
-        if (!is_array($ident)) {
-            $ident = array($ident);
-        }
         foreach ($ident as &$segment) {
             $segment = $this->identifier_quote . $segment . $this->identifier_quote;
         }