diff --git a/src/www/diag_authentication.php b/src/www/diag_authentication.php
index d5a964778..01665abea 100644
--- a/src/www/diag_authentication.php
+++ b/src/www/diag_authentication.php
@@ -28,7 +28,6 @@
 */
 
 require_once("guiconfig.inc");
-require_once("PEAR.inc");
 require_once("interfaces.inc");
 
 $input_errors = array();