2 files changed, 5 insertions, 1 deletions
diff --git a/Objects/object_layout.md b/Objects/object_layout.md
index 3524094..4a78166 100644
--- a/Objects/object_layout.md
+++ b/Objects/object_layout.md
@@ -28,6 +28,10 @@ So the pre-header is these two fields:
 If the object has no physical dictionary, then the ``dict_pointer``
 is set to `NULL`.
 
+In 3.13 only objects with no additional data could have inline values.
+That is, instances of classes with `tp_basicsize == sizeof(PyObject)`.
+In 3.14, any object whose class has `tp_itemsize == 0` can have inline values.
+In both versions, the inline values starts `tp_basicsize` bytes after the object.
 
 <details>
 <summary> 3.12 </summary>
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 0d7009a..f74d5122 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -8340,7 +8340,7 @@ type_ready_managed_dict(PyTypeObject *type)
             return -1;
         }
     }
-    if (type->tp_itemsize == 0 && type->tp_basicsize == sizeof(PyObject)) {
+    if (type->tp_itemsize == 0) {
         type->tp_flags |= Py_TPFLAGS_INLINE_VALUES;
     }
     return 0;