diff --git a/src/Dblayeroo.php b/src/Dblayeroo.php
index 68d79e0..0c5d259 100644
--- a/src/Dblayeroo.php
+++ b/src/Dblayeroo.php
@@ -1769,7 +1769,7 @@ class Dblayeroo
       $tmp = "";
       for ($i = 0 ; $i < strlen ($columnNames) ; $i++)
       {
-        $char = $columnNames{$i};
+        $char = $columnNames[$i];
         if ($parenthesis === true)
         {
           $tmp .= $char;