1 files changed, 1 insertions, 0 deletions

diff --git a/firmware/target/arm/olympus/mrobe-100/backlight-target.h b/firmware/target/arm/olympus/mrobe-100/backlight-target.h
index e6c8387222..7b4787fec3 100644
--- a/firmware/target/arm/olympus/mrobe-100/backlight-target.h
+++ b/firmware/target/arm/olympus/mrobe-100/backlight-target.h
@@ -35,6 +35,7 @@ void _backlight_off(void);
                               BUTTONLIGHT_DISPLAY | BUTTONLIGHT_LEFT  | \
                               BUTTONLIGHT_RIGHT   | BUTTONLIGHT_SCROLL)
 
+void _buttonlight_set_brightness(int brightness);
 void _buttonlight_on(void);
 void _buttonlight_off(void);