diff --git a/mk_mmc.sh b/mk_mmc.sh
index 803c4f0..e071cc7 100755
--- a/mk_mmc.sh
+++ b/mk_mmc.sh
@@ -771,10 +771,12 @@ generate_soc () {
 		echo "dd_uboot_bs=${dd_uboot_bs}" >> ${wfile}
 		echo "dd_uboot_backup=${dd_uboot_backup}" >> ${wfile}
 	else
-		echo "uboot_CONFIG_CMD_BOOTZ=${uboot_CONFIG_CMD_BOOTZ}" >> ${wfile}
-		echo "uboot_CONFIG_SUPPORT_RAW_INITRD=${uboot_CONFIG_SUPPORT_RAW_INITRD}" >> ${wfile}
-		echo "uboot_CONFIG_CMD_FS_GENERIC=${uboot_CONFIG_CMD_FS_GENERIC}" >> ${wfile}
-		echo "zreladdr=${conf_zreladdr}" >> ${wfile}
+		if [ ! "x${conf_smart_uboot}" = "xenable" ] ; then
+			echo "uboot_CONFIG_CMD_BOOTZ=${uboot_CONFIG_CMD_BOOTZ}" >> ${wfile}
+			echo "uboot_CONFIG_SUPPORT_RAW_INITRD=${uboot_CONFIG_SUPPORT_RAW_INITRD}" >> ${wfile}
+			echo "uboot_CONFIG_CMD_FS_GENERIC=${uboot_CONFIG_CMD_FS_GENERIC}" >> ${wfile}
+			echo "zreladdr=${conf_zreladdr}" >> ${wfile}
+		fi
 	fi
 	echo "" >> ${wfile}
 	echo "boot_fstype=${conf_boot_fstype}" >> ${wfile}