diff --git a/ports/stm32/main.c b/ports/stm32/main.c
index 120ab5b670..4d0e7434be 100644
--- a/ports/stm32/main.c
+++ b/ports/stm32/main.c
@@ -192,7 +192,7 @@ MP_NOINLINE STATIC bool init_flash_fs(uint reset_mode) {
         }
 
         // set label
-        f_setlabel(&vfs_fat->fatfs, "pybflash");
+        f_setlabel(&vfs_fat->fatfs, MICROPY_HW_FLASH_FS_LABEL);
 
         // create empty main.py
         FIL fp;
diff --git a/ports/stm32/mpconfigboard_common.h b/ports/stm32/mpconfigboard_common.h
index 857457fdb7..97c21d0227 100644
--- a/ports/stm32/mpconfigboard_common.h
+++ b/ports/stm32/mpconfigboard_common.h
@@ -92,6 +92,11 @@
 #define MICROPY_HW_HAS_LCD (0)
 #endif
 
+// The volume label used when creating the flash filesystem
+#ifndef MICROPY_HW_FLASH_FS_LABEL
+#define MICROPY_HW_FLASH_FS_LABEL "pybflash"
+#endif
+
 /*****************************************************************************/
 // General configuration