diff --git a/Include/descrobject.h b/Include/descrobject.h
index eb1c12db369..340de4e0e1e 100644
--- a/Include/descrobject.h
+++ b/Include/descrobject.h
@@ -80,11 +80,14 @@ struct PyMemberDef {
 #define _Py_T_NONE     20 // Deprecated. Value is always None.
 
 /* Flags */
-#define Py_READONLY            1
-#define Py_AUDIT_READ          2 // Added in 3.10, harmless no-op before that
-#define _Py_WRITE_RESTRICTED   4 // Deprecated, no-op. Do not reuse the value.
-#define Py_RELATIVE_OFFSET     8
-#define _Py_AFTER_ITEMS        16
+#define Py_READONLY            (1 << 0)
+#define Py_AUDIT_READ          (1 << 1) // Added in 3.10, harmless no-op before that
+#define _Py_WRITE_RESTRICTED   (1 << 2) // Deprecated, no-op. Do not reuse the value.
+#define Py_RELATIVE_OFFSET     (1 << 3)
+
+#ifndef Py_LIMITED_API
+#  define _Py_AFTER_ITEMS      (1 << 4) // For internal use.
+#endif
 
 PyAPI_FUNC(PyObject *) PyMember_GetOne(const char *, PyMemberDef *);
 PyAPI_FUNC(int) PyMember_SetOne(char *, PyMemberDef *, PyObject *);
diff --git a/Include/internal/pycore_descrobject.h b/Include/internal/pycore_descrobject.h
index 3cec59a68a3..6143f82176a 100644
--- a/Include/internal/pycore_descrobject.h
+++ b/Include/internal/pycore_descrobject.h
@@ -22,6 +22,8 @@ typedef propertyobject _PyPropertyObject;
 
 extern PyTypeObject _PyMethodWrapper_Type;
 
+extern void *_PyMember_GetOffset(PyObject *, PyMemberDef *);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 0a4d59b2bbe..780aed2cb1c 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -4,6 +4,7 @@
 #include "pycore_abstract.h"      // _PySequence_IterSearch()
 #include "pycore_call.h"          // _PyObject_VectorcallTstate()
 #include "pycore_code.h"          // CO_FAST_FREE
+#include "pycore_descrobject.h"   // _PyMember_GetOffset()
 #include "pycore_dict.h"          // _PyDict_KeysSize()
 #include "pycore_function.h"      // _PyFunction_GetVersionForCurrentState()
 #include "pycore_interpframe.h"   // _PyInterpreterFrame
@@ -2568,8 +2569,6 @@ _PyHeapType_GET_MEMBERS(PyHeapTypeObject* type)
     return PyObject_GetItemData((PyObject *)type);
 }
 
-void *_PyMember_GetOffset(PyObject *obj, PyMemberDef *l);
-
 static int
 traverse_slots(PyTypeObject *type, PyObject *self, visitproc visit, void *arg)
 {
diff --git a/Python/structmember.c b/Python/structmember.c
index d4a3f9e59a9..b88e13ac046 100644
--- a/Python/structmember.c
+++ b/Python/structmember.c
@@ -3,6 +3,7 @@
 
 #include "Python.h"
 #include "pycore_abstract.h"      // _PyNumber_Index()
+#include "pycore_descrobject.h"   // _PyMember_GetOffset()
 #include "pycore_long.h"          // _PyLong_IsNegative()
 #include "pycore_object.h"        // _Py_TryIncrefCompare(), FT_ATOMIC_*()
 #include "pycore_critical_section.h"