diff --git a/markbase-core/src/webdav.rs b/markbase-core/src/webdav.rs
index a3e2d49..9b64329 100644
--- a/markbase-core/src/webdav.rs
+++ b/markbase-core/src/webdav.rs
@@ -645,6 +645,9 @@ impl DavFileSystem for VfsDavFs {
             Ok(p) => p,
             Err(e) => return Box::pin(std::future::ready(Err(e))),
         };
+        if self.vfs.exists(&full_path) {
+            return Box::pin(std::future::ready(Err(FsError::Exists)));
+        }
         match self.vfs.create_dir_all(&full_path, 0o755) {
             Ok(_) => Box::pin(std::future::ready(Ok(()))),
             Err(_) => Box::pin(std::future::ready(Err(FsError::NotImplemented))),