diff --git a/mos.yml b/mos.yml
index 1411a9d..33a146b 100644
--- a/mos.yml
+++ b/mos.yml
@@ -34,6 +34,8 @@ libs:
 build_vars:
   FLASH_SIZE: 2097152
   FS_SIZE: 262144
+  BOOT_CONFIG_ADDR: 0x1000
+  MGOS_ROOT_FS_TYPE: SPIFFS
 
 conds:
   - when: build_vars.MODEL == "Shelly1"