diff --git a/configs/ds109_defconfig b/configs/ds109_defconfig
index 34a4673..94d3c74 100644
--- a/configs/ds109_defconfig
+++ b/configs/ds109_defconfig
@@ -1,6 +1,7 @@
 CONFIG_ARM=y
 CONFIG_KIRKWOOD=y
 CONFIG_TARGET_DS109=y
+# CONFIG_MMC is not set
 CONFIG_HUSH_PARSER=y
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set