diff --git a/stmhal/boards/PYBV10/mpconfigboard.h b/stmhal/boards/PYBV10/mpconfigboard.h
index 4ae6954a7d..c52d61b667 100644
--- a/stmhal/boards/PYBV10/mpconfigboard.h
+++ b/stmhal/boards/PYBV10/mpconfigboard.h
@@ -2,6 +2,7 @@
 
 #define MICROPY_HW_BOARD_NAME       "PYBv1.0"
 #define MICROPY_HW_MCU_NAME         "STM32F405RG"
+#define MICROPY_PY_SYS_PLATFORM     "pyboard"
 
 #define MICROPY_HW_HAS_SWITCH       (1)
 #define MICROPY_HW_HAS_SDCARD       (1)