diff --git a/Database.php b/Database.php
index 4734e2f..2754c9c 100644
--- a/Database.php
+++ b/Database.php
@@ -28,7 +28,7 @@ class Database
         if(!$result) {
             $error = 10101;
         }
-        if(!$error) {
+        if(!isset($error)) {
             $data = pg_fetch_all($result);
         } else {
             $data = null;