diff --git a/configs/bubinga_defconfig b/configs/bubinga_defconfig
index ea629f6..8a72e44 100644
--- a/configs/bubinga_defconfig
+++ b/configs/bubinga_defconfig
@@ -1,4 +1,5 @@
 CONFIG_PPC=y
+# CONFIG_MMC is not set
 CONFIG_4xx=y
 CONFIG_TARGET_BUBINGA=y
 CONFIG_OF_BOARD_SETUP=y