diff --git a/dblayeroo.php b/dblayeroo.php
index b254c4b..13a87e6 100644
--- a/dblayeroo.php
+++ b/dblayeroo.php
@@ -2546,7 +2546,8 @@ class dblayeroo
         foreach ($row as $colNb=>$val)
         {
           // Harmonize the fetchAll result between all the databases drivers
-          if (strpos ($columns[$colNb], "("))
+          $pos = strpos ($columns[$colNb], "(");
+          if ($pos)
           {
             // Function. The function that return an int must be added in this
             // list, to cast correctely the value