--- CUser_orig.php      2014-08-07 12:02:36.000000000 +0200
+++ CUser.php   2014-08-07 12:02:57.000000000 +0200
@@ -980,15 +980,15 @@
                }

                if ($authType == ZBX_AUTH_HTTP) {
-                       // if PHP_AUTH_USER is not set, it means that HTTP authentication is not enabled
-                       if (!isset($_SERVER['PHP_AUTH_USER'])) {
+                       // if REMOTE_USER is not set, it means that HTTP authentication is not enabled
+                       if (!isset($_SERVER['REMOTE_USER'])) {
                                self::exception(ZBX_API_ERROR_PARAMETERS, _('Cannot login.'));
                        }
                        // check if the user name used when calling the API matches the one used for HTTP authentication
-                       elseif ($name !== $_SERVER['PHP_AUTH_USER']) {
+                       elseif ($name !== $_SERVER['REMOTE_USER']) {
                                self::exception(ZBX_API_ERROR_PARAMETERS,
                                        _s('Login name "%1$s" does not match the name "%2$s" used to pass HTTP authentication.',
-                                               $name, $_SERVER['PHP_AUTH_USER']
+                                               $name, $_SERVER['REMOTE_USER']
                                        )
                                );
                        }