diff --git a/libraries/AP_HAL/AP_HAL_Boards.h b/libraries/AP_HAL/AP_HAL_Boards.h
index 94cc182e38..7cf9ac8385 100644
--- a/libraries/AP_HAL/AP_HAL_Boards.h
+++ b/libraries/AP_HAL/AP_HAL_Boards.h
@@ -215,9 +215,10 @@
 #define HAL_BOARD_NAME "VRBRAIN"
 #define HAL_CPU_CLASS HAL_CPU_CLASS_150
 #define HAL_OS_POSIX_IO 1
-#define HAL_STORAGE_SIZE            4096
+#define HAL_STORAGE_SIZE            8192
 #define HAL_STORAGE_SIZE_AVAILABLE  HAL_STORAGE_SIZE
 #define HAL_BOARD_LOG_DIRECTORY "/fs/microsd/APM/LOGS"
+#define HAL_BOARD_TERRAIN_DIRECTORY "/fs/microsd/APM/TERRAIN"
 #define HAL_INS_DEFAULT HAL_INS_VRBRAIN
 #define HAL_BARO_DEFAULT HAL_BARO_VRBRAIN
 #define HAL_COMPASS_DEFAULT HAL_COMPASS_VRBRAIN