diff --git a/dblayer.php b/dblayer.php
index 032e24a..eac696c 100644
--- a/dblayer.php
+++ b/dblayer.php
@@ -670,7 +670,7 @@ class dblayer extends PDO
       {
         if ($n > 0)
          $req .= ",";
-        $req .= $o[0];
+        $req .= $this->sep.$o[0].$this->sep;
         if (isset ($o[1]) && $o[1] === "DESC")
           $req .= " DESC";
         else