diff --git a/ROMFS/px4fmu_common/init.d/rc.interface b/ROMFS/px4fmu_common/init.d/rc.interface
index bf986b3c5e..a602fe1385 100644
--- a/ROMFS/px4fmu_common/init.d/rc.interface
+++ b/ROMFS/px4fmu_common/init.d/rc.interface
@@ -130,6 +130,11 @@ then
 	set MIXER_AUX none
 fi
 
+if ver hwcmp PX4FMU_V5
+then
+	set MIXER_AUX none
+fi
+
 if [ $MIXER_AUX != none -a $AUX_MODE != none ]
 then
 	#