diff --git a/model/DbStatement.php b/model/DbStatement.php
index d5a3200..adf4b08 100644
--- a/model/DbStatement.php
+++ b/model/DbStatement.php
@@ -153,6 +153,7 @@ abstract class DbStatement
     
     public function fetchPairs()
     {
+        $data = array();
         while ($row = $this->fetch(Db::FETCH_NUM)) {
             $data[$row[0]] = $row[1];
         }