[Py_Exc]NumberError => [Py_Exc]ArithmeticError
diff --git a/Include/pyerrors.h b/Include/pyerrors.h
index 580f6d7..cd6b7ba 100644
--- a/Include/pyerrors.h
+++ b/Include/pyerrors.h
@@ -55,7 +55,7 @@
 
 extern DL_IMPORT(PyObject *) PyExc_Exception;
 extern DL_IMPORT(PyObject *) PyExc_StandardError;
-extern DL_IMPORT(PyObject *) PyExc_NumberError;
+extern DL_IMPORT(PyObject *) PyExc_ArithmeticError;
 extern DL_IMPORT(PyObject *) PyExc_LookupError;
 
 extern DL_IMPORT(PyObject *) PyExc_AssertionError;