diff --git a/Include/object.h b/Include/object.h
index a09421b..015d216 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -492,8 +492,12 @@
 PyAPI_FUNC(unsigned int) PyType_ClearCache(void);
 PyAPI_FUNC(void) PyType_Modified(PyTypeObject *);
 
-PyAPI_FUNC(PyObject *) _PyType_GetDocFromInternalDoc(const char *name, const char *internal_doc);
-PyAPI_FUNC(PyObject *) _PyType_GetTextSignatureFromInternalDoc(const char *name, const char *internal_doc);
+#ifndef Py_LIMITED_API
+PyAPI_FUNC(PyObject *)
+_PyType_GetDocFromInternalDoc(const char *, const char *);
+PyAPI_FUNC(PyObject *)
+_PyType_GetTextSignatureFromInternalDoc(const char *, const char *);
+#endif
 
 /* Generic operations on objects */
 struct _Py_Identifier;