diff --git a/libraries/RC_Channel/RC_Channel.cpp b/libraries/RC_Channel/RC_Channel.cpp
index 296afb878b..b868d8bb63 100644
--- a/libraries/RC_Channel/RC_Channel.cpp
+++ b/libraries/RC_Channel/RC_Channel.cpp
@@ -1375,6 +1375,9 @@ bool RC_Channel::do_aux_function(const aux_func_t ch_option, const AuxSwitchPos
 
     case AUX_FUNC::GPS_DISABLE:
         AP::gps().force_disable(ch_flag == AuxSwitchPos::HIGH);
+#if HAL_EXTERNAL_AHRS_ENABLED
+        AP::externalAHRS().set_gnss_disable(ch_flag == AuxSwitchPos::HIGH);
+#endif
         break;
 
     case AUX_FUNC::GPS_DISABLE_YAW: