diff --git a/configs/spear600_defconfig b/configs/spear600_defconfig
index 9eb6494..acd1542 100644
--- a/configs/spear600_defconfig
+++ b/configs/spear600_defconfig
@@ -1,6 +1,7 @@
 CONFIG_ARM=y
 CONFIG_TARGET_SPEAR600=y
 CONFIG_IDENT_STRING="-SPEAr"
+# CONFIG_MMC is not set
 CONFIG_SYS_EXTRA_OPTIONS="SPEAR600"
 CONFIG_BOOTDELAY=1
 CONFIG_SYS_CONSOLE_INFO_QUIET=y