diff --git a/Include/internal/pycore_typeobject.h b/Include/internal/pycore_typeobject.h
index ca5a1e2adb4787..118bc98b35d5e3 100644
--- a/Include/internal/pycore_typeobject.h
+++ b/Include/internal/pycore_typeobject.h
@@ -209,7 +209,6 @@ extern PyObject * _PyType_GetBases(PyTypeObject *type);
 extern PyObject * _PyType_GetMRO(PyTypeObject *type);
 extern PyObject* _PyType_GetSubclasses(PyTypeObject *);
 extern int _PyType_HasSubclasses(PyTypeObject *);
-PyAPI_FUNC(PyObject *) _PyType_GetModuleByDef2(PyTypeObject *, PyTypeObject *, PyModuleDef *);
 
 // Export for _testinternalcapi extension.
 PyAPI_FUNC(PyObject *) _PyType_GetSlotWrapperNames(void);
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 68e481f8e5163b..3368c1ef577d14 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -5207,8 +5207,8 @@ PyType_GetModuleState(PyTypeObject *type)
 /* Get the module of the first superclass where the module has the
  * given PyModuleDef.
  */
-static inline PyObject *
-get_module_by_def(PyTypeObject *type, PyModuleDef *def)
+PyObject *
+PyType_GetModuleByDef(PyTypeObject *type, PyModuleDef *def)
 {
     assert(PyType_Check(type));
 
@@ -5241,7 +5241,7 @@ get_module_by_def(PyTypeObject *type, PyModuleDef *def)
     Py_ssize_t n = PyTuple_GET_SIZE(mro);
     for (Py_ssize_t i = 1; i < n; i++) {
         PyObject *super = PyTuple_GET_ITEM(mro, i);
-        if(!_PyType_HasFeature((PyTypeObject *)super, Py_TPFLAGS_HEAPTYPE)) {
+        if (!_PyType_HasFeature((PyTypeObject *)super, Py_TPFLAGS_HEAPTYPE)) {
             // Static types in the MRO need to be skipped
             continue;
         }
@@ -5254,37 +5254,14 @@ get_module_by_def(PyTypeObject *type, PyModuleDef *def)
         }
     }
     END_TYPE_LOCK();
-    return res;
-}
 
-PyObject *
-PyType_GetModuleByDef(PyTypeObject *type, PyModuleDef *def)
-{
-    PyObject *module = get_module_by_def(type, def);
-    if (module == NULL) {
+    if (res == NULL) {
         PyErr_Format(
             PyExc_TypeError,
             "PyType_GetModuleByDef: No superclass of '%s' has the given module",
             type->tp_name);
     }
-    return module;
-}
-
-PyObject *
-_PyType_GetModuleByDef2(PyTypeObject *left, PyTypeObject *right,
-                        PyModuleDef *def)
-{
-    PyObject *module = get_module_by_def(left, def);
-    if (module == NULL) {
-        module = get_module_by_def(right, def);
-        if (module == NULL) {
-            PyErr_Format(
-                PyExc_TypeError,
-                "PyType_GetModuleByDef: No superclass of '%s' nor '%s' has "
-                "the given module", left->tp_name, right->tp_name);
-        }
-    }
-    return module;
+    return res;
 }