diff --git a/web/zm_html.php b/web/zm_html.php
index e779d1762..ae2d43ee6 100644
--- a/web/zm_html.php
+++ b/web/zm_html.php
@@ -28,12 +28,11 @@ ini_set( "session.use_trans_sid", "0" );
 ini_set( "session.name", "ZMSESSID" );
 //ini_set( "magic_quotes_gpc", "Off" );
 
-//session_start();
-
 require_once( 'zm_config.php' );
 
 if ( ZM_OPT_USE_AUTH )
 {
+	session_start();
 	$user = $HTTP_SESSION_VARS[user];
 	define( "ZMU_COMMAND", ZMU_PATH." -U $HTTP_SESSION_VARS[username] -P $HTTP_SESSION_VARS[password]" );
 }