diff --git a/kernel/common/los_rootfs.c b/kernel/common/los_rootfs.c
index 7d9f39e1..9db34881 100644
--- a/kernel/common/los_rootfs.c
+++ b/kernel/common/los_rootfs.c
@@ -444,7 +444,7 @@ STATIC VOID OsMountUserdata(const CHAR *fsType)
         return;
     }
     err = get_errno();
-    if (err == ENOENT) {
+    if (err == ENOTSUP) {
 #ifdef LOSCFG_FS_FAT
         ret = format(emmcUserdataDev, 0, FM_FAT32);
         if (ret != LOS_OK) {