1diff --git a/m2r.py b/m2r.py
2index a4e43c2..fb9e588 100644
3--- a/m2r.py
4+++ b/m2r.py
5@@ -10,8 +10,8 @@ from argparse import ArgumentParser, Namespace
6
7 from docutils import statemachine, nodes, io, utils
8 from docutils.parsers import rst
9-from docutils.core import ErrorString
10-from docutils.utils import SafeString, column_width
11+from docutils.utils.error_reporting import ErrorString, SafeString
12+from docutils.utils import column_width
13 import mistune
14
15 if sys.version_info < (3, ):