diff --git a/meta-ohos-core/wic/x-qemux86-directdisk.wks.in b/meta-ohos-core/wic/x-qemux86-directdisk.wks.in
index eae4998e488ef45871d26c24b4cf1dc1155ff9f9..8d30a44c876fbeceaba1a3d60230fad59b8b97c9 100644
--- a/meta-ohos-core/wic/x-qemux86-directdisk.wks.in
+++ b/meta-ohos-core/wic/x-qemux86-directdisk.wks.in
@@ -18,7 +18,7 @@
 # 0 |
 #   4096KiB
 
-bootloader --source bootimg-pcbios --timeout=0 --append="rw oprofile.timer=1 rootfstype=ext4"
+bootloader --source bootimg-pcbios --timeout=0 --append="oprofile.timer=1 rootfstype=${ROOT_FSTYPE}"
 
 part --source bootimg-pcbios --label x-boot --align 4096 --fixed-size ${BOOT_PARTITION_SIZE} --active --offset 4096
 ${WIC_ROOTA_PARTITION}