diff --git a/libraries/AP_HAL/AP_HAL_Boards.h b/libraries/AP_HAL/AP_HAL_Boards.h
index 2caca58341..40f5c26944 100644
--- a/libraries/AP_HAL/AP_HAL_Boards.h
+++ b/libraries/AP_HAL/AP_HAL_Boards.h
@@ -40,6 +40,7 @@
 #define HAL_BOARD_SUBTYPE_LINUX_POCKET     1022
 #define HAL_BOARD_SUBTYPE_LINUX_NAVIGATOR  1023
 #define HAL_BOARD_SUBTYPE_LINUX_VNAV       1024
+#define HAL_BOARD_SUBTYPE_LINUX_OBAL_V1    1025
 
 /* HAL CHIBIOS sub-types, starting at 5000