diff --git a/configs/iocon_defconfig b/configs/iocon_defconfig
index c74df94..2529181 100644
--- a/configs/iocon_defconfig
+++ b/configs/iocon_defconfig
@@ -3,6 +3,7 @@
 CONFIG_4xx=y
 CONFIG_TARGET_IOCON=y
 CONFIG_FIT=y
+# CONFIG_FIT_ENABLE_SHA256_SUPPORT is not set
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_BOOTDELAY=5
 CONFIG_SYS_CONSOLE_INFO_QUIET=y