diff --git a/startmvc/Lib/Db/Sql.php b/startmvc/Lib/Db/Sql.php
index 1b287fd6c64b353c8bfe0ed1b3c129bf1facba31..7bf5249d18c3547a1a9855f47764ebcb62ccb057 100644
--- a/startmvc/Lib/Db/Sql.php
+++ b/startmvc/Lib/Db/Sql.php
@@ -1046,7 +1046,7 @@ class Sql
     public function rollBack()
     {
         if (--$this->transactionCount) {
-            $this->pdo->exec('ROLLBACK TO trans' . $this->transactionCount + 1);
+            $this->pdo->exec('ROLLBACK TO trans' . ($this->transactionCount + 1));
             return true;
         }