diff --git a/configs/whistler_defconfig b/configs/whistler_defconfig
index 7c93980..b7f1b56 100644
--- a/configs/whistler_defconfig
+++ b/configs/whistler_defconfig
@@ -27,6 +27,7 @@
 CONFIG_CMD_FS_GENERIC=y
 CONFIG_SPL_DM=y
 # CONFIG_BLK is not set
+# CONFIG_DM_MMC_OPS is not set
 CONFIG_SYS_NS16550=y
 CONFIG_USB=y
 CONFIG_DM_USB=y