diff --git a/configs/MPC8555CDS_defconfig b/configs/MPC8555CDS_defconfig
index da42112..9f9168a 100644
--- a/configs/MPC8555CDS_defconfig
+++ b/configs/MPC8555CDS_defconfig
@@ -1,4 +1,5 @@
 CONFIG_PPC=y
+# CONFIG_MMC is not set
 CONFIG_MPC85xx=y
 CONFIG_TARGET_MPC8555CDS=y
 CONFIG_OF_BOARD_SETUP=y