diff --git a/src/ORM/DBInstance.php b/src/ORM/DBInstance.php
index 8e94be4..170f5fd 100755
--- a/src/ORM/DBInstance.php
+++ b/src/ORM/DBInstance.php
@@ -10,7 +10,7 @@ class DBInstance {
 		while(strpos($sql, "  ") > -1){
     		$sql = str_replace("  ", " ", $sql);
 		}
-		$sql = str_replace("{", "mdl_", $sql);
+		$sql = str_replace("{", $con->prefix, $sql);
 		$sql = str_replace("}", "", $sql);        
         return  $sql;
     }