diff --git a/include/php_setup.inc b/include/php_setup.inc
index 296fd7c12e33f1ab275497cf3c56aad4d1a78523..1d8ac98f4e40224a511e61be8274761b3faf8bb3 100644
--- a/include/php_setup.inc
+++ b/include/php_setup.inc
@@ -25,6 +25,7 @@
  * Source code for php_setup
  */
 require_once("variables.inc");
+require_once('class_URL.inc');
 
 function html_trace ($errstr = "")
 {