diff --git a/libraries/AP_ICEngine/AP_ICEngine.cpp b/libraries/AP_ICEngine/AP_ICEngine.cpp
index ade41a1578ad4..852df82dbe535 100644
--- a/libraries/AP_ICEngine/AP_ICEngine.cpp
+++ b/libraries/AP_ICEngine/AP_ICEngine.cpp
@@ -142,7 +142,7 @@ const AP_Param::GroupInfo AP_ICEngine::var_info[] = {
 
     // @Param: OPTIONS
     // @DisplayName: ICE options
-    // @Description: Options for ICE control. The Disable ignition in RC failsafe option will cause the ignition to be set off on any R/C failsafe. If Throttle while disarmed is set then throttle control will be allowed while disarmed for planes when in MANUAL mode. If disable while disarmed is set the engine will not start while the vehicle is disarmed.
+    // @Description: Options for ICE control. The Disable ignition in RC failsafe option will cause the ignition to be set off on any R/C failsafe. If Throttle while disarmed is set then throttle control will be allowed while disarmed for planes when in MANUAL mode. If disable while disarmed is set the engine will not start while the vehicle is disarmed unless overriden by the MAVLink DO_ENGINE_CONTROL command.
     // @Bitmask: 0:Disable ignition in RC failsafe,1:Disable redline governor,2:Throttle while disarmed,3:Disable while disarmed
     AP_GROUPINFO("OPTIONS", 15, AP_ICEngine, options, 0),