diff --git a/libraries/AP_Beacon/AP_Beacon.cpp b/libraries/AP_Beacon/AP_Beacon.cpp
index eb6da6f544..9fe761dfa5 100644
--- a/libraries/AP_Beacon/AP_Beacon.cpp
+++ b/libraries/AP_Beacon/AP_Beacon.cpp
@@ -29,7 +29,7 @@ const AP_Param::GroupInfo AP_Beacon::var_info[] = {
     // @Param: _TYPE
     // @DisplayName: Beacon based position estimation device type
     // @Description: What type of beacon based position estimation device is connected
-    // @Values: 0:None,1:Pozyx,2:Marvelmind
+    // @Values: 0:None,1:Pozyx,2:Marvelmind,10:SITL
     // @User: Advanced
     AP_GROUPINFO("_TYPE",    0, AP_Beacon, _type, 0),