1 files changed, 1 insertions, 0 deletions

diff --git a/firmware/backlight.c b/firmware/backlight.c
index 69907cf8d0..3d40a929af 100644
--- a/firmware/backlight.c
+++ b/firmware/backlight.c
@@ -107,6 +107,7 @@ void backlight_tick(void)
 
 void backlight_init(void)
 {
+    rtc_write(0x0a, 0x40); /* Enable square wave */
     queue_init(&backlight_queue);
     create_thread(backlight_thread, backlight_stack, sizeof(backlight_stack));
     backlight_on();