diff --git a/Database.php b/Database.php
index 2754c9c..0ba21fa 100644
--- a/Database.php
+++ b/Database.php
@@ -20,6 +20,7 @@ class Database
     // Execute $sql unsing array $params as params when needed.
     function query($sql, $params = null) {
         $result = null;
+        $error = 0;
         if($params) {
             $result = pg_query_params($this->db, $sql, $params);
         } else {