diff --git a/Modules/clinic/posixmodule.c.h b/Modules/clinic/posixmodule.c.h
index 14a6efb9ac96d8..d7af87dc946aeb 100644
--- a/Modules/clinic/posixmodule.c.h
+++ b/Modules/clinic/posixmodule.c.h
@@ -2367,7 +2367,7 @@ os__path_isjunction(PyObject *module, PyObject *const *args, Py_ssize_t nargs, P
 #endif /* defined(MS_WINDOWS) */
 
 PyDoc_STRVAR(os__path_splitroot_ex__doc__,
-"_path_splitroot_ex($module, /, path)\n"
+"_path_splitroot_ex($module, /, p)\n"
 "--\n"
 "\n"
 "Split a pathname into drive, root and tail.\n"
@@ -2393,7 +2393,7 @@ os__path_splitroot_ex(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
         PyObject *ob_item[NUM_KEYWORDS];
     } _kwtuple = {
         .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
-        .ob_item = { &_Py_ID(path), },
+        .ob_item = { _Py_LATIN1_CHR('p'), },
     };
     #undef NUM_KEYWORDS
     #define KWTUPLE (&_kwtuple.ob_base.ob_base)
@@ -2402,7 +2402,7 @@ os__path_splitroot_ex(PyObject *module, PyObject *const *args, Py_ssize_t nargs,
     #  define KWTUPLE NULL
     #endif  // !Py_BUILD_CORE
 
-    static const char * const _keywords[] = {"path", NULL};
+    static const char * const _keywords[] = {"p", NULL};
     static _PyArg_Parser _parser = {
         .keywords = _keywords,
         .fname = "_path_splitroot_ex",
@@ -12819,4 +12819,4 @@ os__is_inputhook_installed(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=b2ffb856bcada7c9 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ee0e3772de1bf216 input=a9049054013a1b77]*/
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 51e34b5f4b74fc..1b5dc278e9d41b 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -5503,7 +5503,7 @@ os__path_isjunction_impl(PyObject *module, path_t *path)
 /*[clinic input]
 os._path_splitroot_ex
 
-    path: path_t(make_wide=True, nonstrict=True)
+    p as path: path_t(make_wide=True, nonstrict=True)
 
 Split a pathname into drive, root and tail.
 
@@ -5512,7 +5512,7 @@ The tail contains anything after the root.
 
 static PyObject *
 os__path_splitroot_ex_impl(PyObject *module, path_t *path)
-/*[clinic end generated code: output=4b0072b6cdf4b611 input=6eb76e9173412c92]*/
+/*[clinic end generated code: output=4b0072b6cdf4b611 input=4556b615c7cc13f2]*/
 {
     Py_ssize_t drvsize, rootsize;
     PyObject *drv = NULL, *root = NULL, *tail = NULL, *result = NULL;