diff --git a/configs/MPC8555CDS_legacy_defconfig b/configs/MPC8555CDS_legacy_defconfig
index fb14891..51d17ad 100644
--- a/configs/MPC8555CDS_legacy_defconfig
+++ b/configs/MPC8555CDS_legacy_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