diff --git a/tests/test_domain_py.py b/tests/test_domain_py.py
index 2546b62c3..140cb9710 100644
--- a/tests/test_domain_py.py
+++ b/tests/test_domain_py.py
@@ -18,9 +18,10 @@ from docutils import nodes
 from sphinx import addnodes
 from sphinx.addnodes import (desc, desc_addname, desc_annotation, desc_content, desc_name,
                              desc_optional, desc_parameter, desc_parameterlist, desc_returns,
-                             desc_sig_keyword, desc_sig_literal_number, desc_sig_literal_string,
-                             desc_sig_name, desc_sig_operator, desc_sig_punctuation,
-                             desc_signature, desc_sig_space, pending_xref)
+                             desc_sig_keyword, desc_sig_literal_number,
+                             desc_sig_literal_string, desc_sig_name, desc_sig_operator,
+                             desc_sig_punctuation, desc_sig_space, desc_signature,
+                             pending_xref)
 from sphinx.domains import IndexEntry
 from sphinx.domains.python import (PythonDomain, PythonModuleIndex, _parse_annotation,
                                    _pseudo_parse_arglist, py_sig_re)