diff --git a/src/main/io/serial_4way.c b/src/main/io/serial_4way.c
index cf6f0a8321..e3d19927ad 100644
--- a/src/main/io/serial_4way.c
+++ b/src/main/io/serial_4way.c
@@ -76,7 +76,7 @@
 // *** change to adapt Revision
 #define SERIAL_4WAY_VER_MAIN 20
 #define SERIAL_4WAY_VER_SUB_1 (uint8_t) 0
-#define SERIAL_4WAY_VER_SUB_2 (uint8_t) 02
+#define SERIAL_4WAY_VER_SUB_2 (uint8_t) 03
 
 #define SERIAL_4WAY_PROTOCOL_VER 107
 // *** end