diff --git a/configs/colibri_t20_defconfig b/configs/colibri_t20_defconfig
index 2745d8b..586dd27 100644
--- a/configs/colibri_t20_defconfig
+++ b/configs/colibri_t20_defconfig
@@ -31,6 +31,7 @@
 CONFIG_CMD_FS_GENERIC=y
 CONFIG_CMD_UBI=y
 CONFIG_SPL_DM=y
+# CONFIG_BLK is not set
 CONFIG_DFU_MMC=y
 CONFIG_DFU_RAM=y
 CONFIG_MTD_UBI_FASTMAP=y