diff --git a/conf/autopilot/subsystems/rotorcraft/radio_control_spektrum.makefile b/conf/autopilot/subsystems/rotorcraft/radio_control_spektrum.makefile
index e95bfcc34a..0a8b27c0f8 100644
--- a/conf/autopilot/subsystems/rotorcraft/radio_control_spektrum.makefile
+++ b/conf/autopilot/subsystems/rotorcraft/radio_control_spektrum.makefile
@@ -12,7 +12,7 @@ ap.CFLAGS += -DRADIO_CONTROL_SPEKTRUM_MODEL_H=$(RADIO_CONTROL_SPEKTRUM_MODEL)
 endif
 ap.CFLAGS += -DRADIO_CONTROL_LED=$(RADIO_CONTROL_LED)
 ap.CFLAGS += -DRADIO_CONTROL_SPEKTRUM_PRIMARY_PORT=$(RADIO_CONTROL_SPEKTRUM_PRIMARY_PORT)
-ap.CFLAGS += -DOVERRIDE_$(RADIO_CONTROL_SPEKTRUM_PRIMARY_PORT)_IRQ_HANDLER -DUSE_TIM1_UP_IRQ
+ap.CFLAGS += -DOVERRIDE_$(RADIO_CONTROL_SPEKTRUM_PRIMARY_PORT)_IRQ_HANDLER -DUSE_TIM6_IRQ
 
 ap.srcs += $(SRC_BOOZ)/booz_radio_control.c \
            $(SRC_BOOZ)/radio_control/booz_radio_control_spektrum.c \