diff --git a/configs/MPC8313ERDB_33_defconfig b/configs/MPC8313ERDB_33_defconfig
index 2fdffa9..2513632 100644
--- a/configs/MPC8313ERDB_33_defconfig
+++ b/configs/MPC8313ERDB_33_defconfig
@@ -1,4 +1,5 @@
 CONFIG_PPC=y
+# CONFIG_MMC is not set
 CONFIG_MPC83xx=y
 CONFIG_TARGET_MPC8313ERDB=y
 CONFIG_OF_BOARD_SETUP=y