diff --git a/libraries/RC_Channel/RC_Channel.cpp b/libraries/RC_Channel/RC_Channel.cpp
index 2722464df5..89ab69a571 100644
--- a/libraries/RC_Channel/RC_Channel.cpp
+++ b/libraries/RC_Channel/RC_Channel.cpp
@@ -670,7 +670,7 @@ void RC_Channel::init_aux_function(const AUX_FUNC ch_option, const AuxSwitchPos
     case AUX_FUNC::GENERATOR: // don't turn generator on or off initially
 #endif
 #if AP_AHRS_ENABLED
-    case AUX_FUNC::EKF_POS_SOURCE:
+    case AUX_FUNC::EKF_SOURCE_SET:
 #endif
 #if HAL_TORQEEDO_ENABLED
     case AUX_FUNC::TORQEEDO_CLEAR_ERR:
@@ -1626,7 +1626,7 @@ bool RC_Channel::do_aux_function(const AUX_FUNC ch_option, const AuxSwitchPos ch
         break;
 #endif
 
-    case AUX_FUNC::EKF_POS_SOURCE: {
+    case AUX_FUNC::EKF_SOURCE_SET: {
         AP_NavEKF_Source::SourceSetSelection source_set = AP_NavEKF_Source::SourceSetSelection::PRIMARY;
         switch (ch_flag) {
         case AuxSwitchPos::LOW:
diff --git a/libraries/RC_Channel/RC_Channel.h b/libraries/RC_Channel/RC_Channel.h
index 6e5c766e05..b999d007ca 100644
--- a/libraries/RC_Channel/RC_Channel.h
+++ b/libraries/RC_Channel/RC_Channel.h
@@ -191,7 +191,7 @@ public:
         CROW_SELECT =         87, // select CROW mode for diff spoilers;high disables,mid forces progressive
         SOARING =             88, // three-position switch to set soaring mode
         LANDING_FLARE =       89, // force flare, throttle forced idle, pitch to LAND_PITCH_DEG, tilts up
-        EKF_POS_SOURCE =      90, // change EKF position source between primary, secondary and tertiary sources
+        EKF_SOURCE_SET =      90, // change EKF data source set between primary, secondary and tertiary
         ARSPD_CALIBRATE=      91, // calibrate airspeed ratio 
         FBWA =                92, // Fly-By-Wire-A
         RELOCATE_MISSION =    93, // used in separate branch MISSION_RELATIVE