diff --git a/.gitignore b/.gitignore
index d2a206fe3d..33be5cb20c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@ neatlynx/__pycache__
 cache
 *.pyc
 .env/
+.env2.7/
 
 cache
 .dvc.conf.lock
diff --git a/dvc/state.py b/dvc/state.py
index 61f82549d9..dacc07693c 100644
--- a/dvc/state.py
+++ b/dvc/state.py
@@ -369,14 +369,12 @@ def save(self, path_info, checksum):
         """
         assert path_info.scheme == "local"
         assert checksum is not None
-
-        path = fspath_py35(path_info)
-        assert os.path.exists(path)
+        assert os.path.exists(fspath_py35(path_info))
 
         actual_mtime, actual_size = get_mtime_and_size(
-            path, self.repo.dvcignore
+            path_info, self.repo.dvcignore
         )
-        actual_inode = get_inode(path)
+        actual_inode = get_inode(path_info)
 
         existing_record = self.get_state_record_for_inode(actual_inode)
         if not existing_record:
diff --git a/dvc/utils/fs.py b/dvc/utils/fs.py
index 811b4195a9..6ded4cefdb 100644
--- a/dvc/utils/fs.py
+++ b/dvc/utils/fs.py
@@ -7,7 +7,7 @@
 
 from dvc.exceptions import DvcException
 from dvc.system import System
-from dvc.utils import dict_md5, walk_files
+from dvc.utils import dict_md5, walk_files, fspath_py35
 from dvc.utils.compat import str
 
 
@@ -21,7 +21,7 @@ def get_inode(path):
 
 
 def get_mtime_and_size(path, dvcignore):
-    if os.path.isdir(path):
+    if os.path.isdir(fspath_py35(path)):
         size = 0
         files_mtimes = {}
         for file_path in walk_files(path, dvcignore):
@@ -39,7 +39,7 @@ def get_mtime_and_size(path, dvcignore):
         # max(mtime(f) for f in non_ignored_files)
         mtime = dict_md5(files_mtimes)
     else:
-        base_stat = os.stat(path)
+        base_stat = os.stat(fspath_py35(path))
         size = base_stat.st_size
         mtime = base_stat.st_mtime
         mtime = int(nanotime.timestamp(mtime))
diff --git a/tests/unit/utils/test_fs.py b/tests/unit/utils/test_fs.py
index 97c1ad29ba..d479b10d99 100644
--- a/tests/unit/utils/test_fs.py
+++ b/tests/unit/utils/test_fs.py
@@ -156,3 +156,14 @@ def test_get_inode(repo_dir):
     path = repo_dir.FOO
     path_info = PathInfo(path)
     assert get_inode(path) == get_inode(path_info)
+
+
+@pytest.mark.parametrize("path", [TestDir.DATA, TestDir.DATA_DIR])
+def test_path_object_and_str_are_valid_types_get_mtime_and_size(
+    path, repo_dir
+):
+    dvcignore = DvcIgnoreFilter(repo_dir.root_dir)
+    time, size = get_mtime_and_size(path, dvcignore)
+    object_time, object_size = get_mtime_and_size(PathInfo(path), dvcignore)
+    assert time == object_time
+    assert size == object_size