diff --git a/stdlib/2/posix.pyi b/stdlib/2/posix.pyi
index 6cfd8520a..e85a2a55f 100644
--- a/stdlib/2/posix.pyi
+++ b/stdlib/2/posix.pyi
@@ -1,4 +1,4 @@
-from typing import AnyStr, Dict, List, Mapping, Tuple, Union, Sequence, IO, Optional, TypeVar
+from typing import AnyStr, Dict, IO, List, Mapping, NamedTuple, Optional, Sequence, Tuple, TypeVar, Union
 
 error = OSError
 
@@ -78,10 +78,7 @@ class stat_result(object):
     st_mtime: int
     st_ctime: int
 
-class statvfs_result(object):
-    n_fields: int
-    n_sequence_fields: int
-    n_unnamed_fields: int
+class statvfs_result(NamedTuple):
     f_bsize: int
     f_frsize: int
     f_blocks: int
diff --git a/stdlib/3/os/__init__.pyi b/stdlib/3/os/__init__.pyi
index 777cefc33..9e5343131 100644
--- a/stdlib/3/os/__init__.pyi
+++ b/stdlib/3/os/__init__.pyi
@@ -270,7 +270,7 @@ else:
 
 
 if sys.platform != 'win32':
-    class statvfs_result:  # Unix only
+    class statvfs_result(NamedTuple):  # Unix only
         f_bsize: int
         f_frsize: int
         f_blocks: int