diff --git a/documentation/modules/exploit/linux/http/paloalto_expedition_rce.md b/documentation/modules/exploit/linux/http/paloalto_expedition_rce.md
index fd881807cb..24f56513c6 100644
--- a/documentation/modules/exploit/linux/http/paloalto_expedition_rce.md
+++ b/documentation/modules/exploit/linux/http/paloalto_expedition_rce.md
@@ -43,6 +43,8 @@ Username for authentication, if available.
 
 ### PASSWORD
 Password for the associated user.
+### WRITABLE_DIR
+A writable location for the exploit to stage the command payload.
 
 ### RESET_ADMIN_PASSWD
 If the username and password are not specified, the module will attempt to reset the admin password to the default password `paloalto`. This