diff --git a/bureau/class/config.php b/bureau/class/config.php
index cc32bd3b..9833bdb1 100644
--- a/bureau/class/config.php
+++ b/bureau/class/config.php
@@ -28,10 +28,11 @@
  ----------------------------------------------------------------------
 */
 
-/* */
-// To enable dispay of PHP errors
-ini_set('display_errors', true);
-/* */
+// To enable the display of the alternc debug error, do the following :
+// # touch /etc/alternc/alternc_display_php_error
+if (file_exists('/etc/alternc/alternc_display_php_error')) {
+  ini_set('display_errors', true);
+}
 
 session_start();