diff --git a/libraries/AP_BoardConfig/AP_BoardConfig.cpp b/libraries/AP_BoardConfig/AP_BoardConfig.cpp
index 117821f648..11e07c9094 100644
--- a/libraries/AP_BoardConfig/AP_BoardConfig.cpp
+++ b/libraries/AP_BoardConfig/AP_BoardConfig.cpp
@@ -78,6 +78,13 @@ const AP_Param::GroupInfo AP_BoardConfig::var_info[] PROGMEM = {
 #elif CONFIG_HAL_BOARD == HAL_BOARD_VRBRAIN
 #endif
 
+    // @Param: SERIAL_NUM
+    // @DisplayName: User-defined serial number
+    // @Description: User-defined serial number of this vehicle, it can be any arbitrary number you want and has no effect on the autopilot
+    // @Range: -32767 to 32768 (any 16bit signed number)
+    // @User: Standard
+    AP_GROUPINFO("SERIAL_NUM", 5, AP_BoardConfig, vehicleSerialNumber, 0),
+
     AP_GROUPEND
 };
 
diff --git a/libraries/AP_BoardConfig/AP_BoardConfig.h b/libraries/AP_BoardConfig/AP_BoardConfig.h
index 7d493a65c7..e68e9b0e85 100644
--- a/libraries/AP_BoardConfig/AP_BoardConfig.h
+++ b/libraries/AP_BoardConfig/AP_BoardConfig.h
@@ -21,6 +21,8 @@ public:
     static const struct AP_Param::GroupInfo var_info[];
 
 private:
+    AP_Int16 vehicleSerialNumber;
+
 #if CONFIG_HAL_BOARD == HAL_BOARD_PX4
     AP_Int8 _pwm_count;
     AP_Int8 _ser1_rtscts;