diff --git a/modules/system/system.admin.inc b/modules/system/system.admin.inc
index 315390cf21..fa715990df 100644
--- a/modules/system/system.admin.inc
+++ b/modules/system/system.admin.inc
@@ -1759,7 +1759,7 @@ function system_run_cron() {
  * Menu callback: return information about PHP.
  */
 function system_php() {
-  phpinfo();
+  phpinfo(~ (INFO_VARIABLES | INFO_ENVIRONMENT));
   exit();
 }