diff --git a/configs/MPC8540ADS_defconfig b/configs/MPC8540ADS_defconfig
index e3cb0d5..6291111 100644
--- a/configs/MPC8540ADS_defconfig
+++ b/configs/MPC8540ADS_defconfig
@@ -1,4 +1,5 @@
 CONFIG_PPC=y
+# CONFIG_MMC is not set
 CONFIG_MPC85xx=y
 CONFIG_TARGET_MPC8540ADS=y
 CONFIG_OF_BOARD_SETUP=y