diff --git a/src/main/target/KAKUTEF4/target.h b/src/main/target/KAKUTEF4/target.h
index 0a78914618..a82ba41e11 100644
--- a/src/main/target/KAKUTEF4/target.h
+++ b/src/main/target/KAKUTEF4/target.h
@@ -128,7 +128,7 @@
 #define DEFAULT_FEATURES        FEATURE_BLACKBOX
 #define DEFAULT_RX_FEATURE      FEATURE_RX_SERIAL
 #define SERIALRX_PROVIDER       SERIALRX_SBUS
-#define SERIALRX_UART           SERIAL_PORT_USART2
+#define SERIALRX_UART           SERIAL_PORT_USART3
 
 #define USE_SERIAL_4WAY_BLHELI_INTERFACE