diff --git a/include/lib/data_sql.class.php b/include/lib/data_sql.class.php
index e3bdb1656..ac5e6d94f 100644
--- a/include/lib/data_sql.class.php
+++ b/include/lib/data_sql.class.php
@@ -70,7 +70,7 @@
  */
 abstract class Data_SQL
 {
-   private $cn;         //! Database connection
+   var $cn;         //! Database connection
    var $name;           //! Array of logical and real name
    var $primary_key;    //! Column name of the primary key 
    var $type;           //! Type of the data