diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index f127cb199bb..acc5cd5ef31 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -607,14 +607,14 @@ class StatAttributeTests(unittest.TestCase):
 
         # Make sure all the attributes are there.
         members = ('bsize', 'frsize', 'blocks', 'bfree', 'bavail', 'files',
-                    'ffree', 'favail', 'flag', 'namemax')
+                    'ffree', 'favail', 'flag', 'namemax', 'fsid')
         for value, member in enumerate(members):
             self.assertEqual(getattr(result, 'f_' + member), result[value])
 
         self.assertTrue(isinstance(result.f_fsid, int))
 
         # Test that the size of the tuple doesn't change
-        self.assertEqual(len(result), 10)
+        self.assertEqual(len(result), 11)
 
         # Make sure that assignment really fails
         try:
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index efa96531d49..2520dc0ffc5 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -2188,7 +2188,7 @@ static PyStructSequence_Desc stat_result_desc = {
 PyDoc_STRVAR(statvfs_result__doc__,
 "statvfs_result: Result from statvfs or fstatvfs.\n\n\
 This object may be accessed either as a tuple of\n\
-  (bsize, frsize, blocks, bfree, bavail, files, ffree, favail, flag, namemax),\n\
+  (bsize, frsize, blocks, bfree, bavail, files, ffree, favail, flag, namemax, fsid),\n\
 or via the attributes f_bsize, f_frsize, f_blocks, f_bfree, and so on.\n\
 \n\
 See os.statvfs for more information.");
@@ -2212,7 +2212,7 @@ static PyStructSequence_Desc statvfs_result_desc = {
     "statvfs_result", /* name */
     statvfs_result__doc__, /* doc */
     statvfs_result_fields,
-    10
+    11
 };
 
 #if defined(HAVE_WAITID) && !defined(__APPLE__)