diff --git a/tosfs/core.py b/tosfs/core.py
index 1534909..86bf5de 100644
--- a/tosfs/core.py
+++ b/tosfs/core.py
@@ -890,6 +890,10 @@ def cp_file(
         bucket, key, vers = self._split_path(path1)
 
         info = self.info(path1, bucket, key, version_id=vers)
+        if info["type"] == "directory":
+            logger.warning(f"Do not support copy directory {path1}.")
+            return
+
         size = info["size"]
 
         _, _, parts_suffix = info.get("ETag", "").strip('"').partition("-")
diff --git a/tosfs/tests/test_fsspec.py b/tosfs/tests/test_fsspec.py
index f846306..7384f0d 100644
--- a/tosfs/tests/test_fsspec.py
+++ b/tosfs/tests/test_fsspec.py
@@ -49,9 +49,9 @@ def test_copy(fsspecfs: Any, bucket: str, temporary_workspace: str):
     ), "Content mismatch in copied file"
 
     # Test Case 2: Copy directory recursively
-    copy_dir_dest = f"{bucket}/{temporary_workspace}/copy_dir/"
+    copy_dir_dest = f"{bucket}/{temporary_workspace}/copy_dir"
     fsspecfs.mkdir(copy_dir_dest)
-    fsspecfs.copy(subdir_path, copy_dir_dest, recursive=True)
+    fsspecfs.copy(subdir_path.rstrip("/") + "/", copy_dir_dest, recursive=True)
     assert fsspecfs.exists(
         f"{copy_dir_dest}/file1.txt"
     ), "Failed to copy directory recursively"