diff --git a/include/configs/km/km_arm.h b/include/configs/km/km_arm.h
index 5a915f3..9c704fc 100644
--- a/include/configs/km/km_arm.h
+++ b/include/configs/km/km_arm.h
@@ -260,6 +260,7 @@ int get_scl(void);
 #if defined(CONFIG_SYS_NO_FLASH)
 #define CONFIG_KM_UBI_PARTITION_NAME   "ubi0"
 #undef	CONFIG_FLASH_CFI_MTD
+#undef	CONFIG_CMD_JFFS2
 #undef	CONFIG_JFFS2_CMDLINE
 #endif