diff --git a/doc/main.conf b/doc/main.conf
index fe353a60..c0c8073e 100644
--- a/doc/main.conf
+++ b/doc/main.conf
@@ -19,7 +19,7 @@ max_4way_handshake_time=5
 # Note, iwmon cannot currently spy on unicast packets sent over netlink, so
 # if you need to capture EAPoL packets (e.g. for debugging) then this option
 # should be set to False.
-ControlPortOverNL80211=True
+control_port_over_nl80211=True
 #
 # Set the threshold RSSI for roaming (default -70)
 roam_rssi_threshold=-70