diff --git a/components/dfs/dfs_v2/src/dfs_posix.c b/components/dfs/dfs_v2/src/dfs_posix.c
index fa5f6dc9f0..ba67fe54b8 100644
--- a/components/dfs/dfs_v2/src/dfs_posix.c
+++ b/components/dfs/dfs_v2/src/dfs_posix.c
@@ -676,7 +676,7 @@ int mkdir(const char *path, mode_t mode)
 
     if (path && dfs_file_lstat(path, &stat) == 0)
     {
-        rt_set_errno(-RT_ERROR);
+        rt_set_errno(-EEXIST);
         return -1;
     }