diff --git a/configs/at91sam9xeek_dataflash_cs1_defconfig b/configs/at91sam9xeek_dataflash_cs1_defconfig
index 1f5e34a..5ff6902 100644
--- a/configs/at91sam9xeek_dataflash_cs1_defconfig
+++ b/configs/at91sam9xeek_dataflash_cs1_defconfig
@@ -1,6 +1,7 @@
 CONFIG_ARM=y
 CONFIG_ARCH_AT91=y
 CONFIG_TARGET_AT91SAM9260EK=y
+# CONFIG_MMC is not set
 CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9XE,SYS_USE_DATAFLASH_CS1"
 CONFIG_BOOTDELAY=3
 # CONFIG_DISPLAY_BOARDINFO is not set