diff --git a/conf/shellinabox b/conf/shellinabox
index ef1e5c0..c5d47db 100644
--- a/conf/shellinabox
+++ b/conf/shellinabox
@@ -6,7 +6,7 @@ SHELLINABOX_PORT=__PORT__
 
 # Parameters that are managed by the system and usually should not need
 # changing:
-# SHELLINABOX_DATA_DIR=/var/lib/shellinabox
+# SHELLINABOX_DATADIR=/var/lib/shellinabox
 # SHELLINABOX_USER=shellinabox
 # SHELLINABOX_GROUP=shellinabox