diff --git a/README.md b/README.md
index 335a86e..697732f 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,13 @@ server.
 
 The extension also allows you to remove functions and constants before the runtime has started up. So it's possible to write you own core functions (strlen, headers_sent) or modify some consts set by a sapi (PHP_SAPI) all in php userland.
 
+#####appserver.php_sapi
+This setting reset's the default PHP_SAPI to given value
+
+```
+appserver.php_sapi = appserver
+```
+
 #####appserver.remove_functions
 This setting hold's a comma separated list of all function to remove on runtime startup. If you want to define your own custom core php function for strlen and headers_sent in userland just use: