diff --git a/Modules/clinic/posixmodule.c.h b/Modules/clinic/posixmodule.c.h
index 780ef8b7561dd1..fd9d5e32546008 100644
--- a/Modules/clinic/posixmodule.c.h
+++ b/Modules/clinic/posixmodule.c.h
@@ -494,7 +494,7 @@ os_fchdir(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *k
 
 PyDoc_STRVAR(os_chmod__doc__,
 "chmod($module, /, path, mode, *, dir_fd=None,\n"
-"      follow_symlinks=_CHMOD_DEFAULT_FOLLOW_SYMLINKS)\n"
+"      follow_symlinks=(os.name != \'nt\'))\n"
 "--\n"
 "\n"
 "Change the access permissions of a file.\n"
@@ -563,7 +563,7 @@ os_chmod(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kw
     path_t path = PATH_T_INITIALIZE("chmod", "path", 0, PATH_HAVE_FCHMOD);
     int mode;
     int dir_fd = DEFAULT_DIR_FD;
-    int follow_symlinks = CHMOD_DEFAULT_FOLLOW_SYMLINKS;
+    int follow_symlinks = 1;
 
     args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 2, 0, argsbuf);
     if (!args) {
@@ -12422,4 +12422,4 @@ os__supports_virtual_terminal(PyObject *module, PyObject *Py_UNUSED(ignored))
 #ifndef OS__SUPPORTS_VIRTUAL_TERMINAL_METHODDEF
     #define OS__SUPPORTS_VIRTUAL_TERMINAL_METHODDEF
 #endif /* !defined(OS__SUPPORTS_VIRTUAL_TERMINAL_METHODDEF) */
-/*[clinic end generated code: output=3009d169f2bf20e7 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=81970b640280cfec input=a9049054013a1b77]*/
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 756ed13bda59ce..ab52909d4765e1 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -3352,7 +3352,8 @@ os.chmod
         and path should be relative; path will then be relative to that
         directory.
 
-    follow_symlinks: bool(c_default="CHMOD_DEFAULT_FOLLOW_SYMLINKS") = _CHMOD_DEFAULT_FOLLOW_SYMLINKS
+    follow_symlinks: bool(c_default="CHMOD_DEFAULT_FOLLOW_SYMLINKS", \
+                          py_default="(os.name != 'nt')") = True
         If False, and the last element of the path is a symbolic link,
         chmod will modify the symbolic link itself instead of the file
         the link points to.
@@ -3369,7 +3370,7 @@ dir_fd and follow_symlinks may not be implemented on your platform.
 static PyObject *
 os_chmod_impl(PyObject *module, path_t *path, int mode, int dir_fd,
               int follow_symlinks)
-/*[clinic end generated code: output=5cf6a94915cc7bff input=b28ffee79f567860]*/
+/*[clinic end generated code: output=5cf6a94915cc7bff input=5c073e3dff76c1a4]*/
 {
     int result;
 
@@ -16970,7 +16971,6 @@ all_ins(PyObject *m)
     if (PyModule_AddIntConstant(m, "_LOAD_LIBRARY_SEARCH_USER_DIRS", LOAD_LIBRARY_SEARCH_USER_DIRS)) return -1;
     if (PyModule_AddIntConstant(m, "_LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR", LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR)) return -1;
 #endif
-    if (PyModule_Add(m, "_CHMOD_DEFAULT_FOLLOW_SYMLINKS", PyBool_FromLong(CHMOD_DEFAULT_FOLLOW_SYMLINKS))) return -1;
 
     return 0;
 }
diff --git a/Tools/clinic/clinic.py b/Tools/clinic/clinic.py
index 816ce0e6efed61..f44df2a1893024 100755
--- a/Tools/clinic/clinic.py
+++ b/Tools/clinic/clinic.py
@@ -3697,7 +3697,7 @@ def converter_init(self, *, accept: TypeSet = {object}) -> None:
             self.format_unit = 'i'
         elif accept != {object}:
             fail(f"bool_converter: illegal 'accept' argument {accept!r}")
-        if self.default is not unspecified:
+        if self.default is not unspecified and self.default is not unknown:
             self.default = bool(self.default)
             self.c_default = str(int(self.default))