diff --git a/src/main/io/serial_4way.c b/src/main/io/serial_4way.c
index b065dfd91c..9dd777b462 100644
--- a/src/main/io/serial_4way.c
+++ b/src/main/io/serial_4way.c
@@ -32,7 +32,6 @@
 #include "drivers/pwm_output.h"
 #include "drivers/light_led.h"
 #include "drivers/system.h"
-#include "drivers/buf_writer.h"
 #include "flight/mixer.h"
 #include "io/beeper.h"
 #include "io/serial_msp.h"