diff --git a/Lib/test/test_xml_etree.py b/Lib/test/test_xml_etree.py
index 50a00acef1b0..50e5196d6fdf 100644
--- a/Lib/test/test_xml_etree.py
+++ b/Lib/test/test_xml_etree.py
@@ -1907,7 +1907,7 @@ class DummyBuilder(BaseDummyBuilder):
 
     # XXX in _elementtree, the constructor of TreeBuilder expects no
     # arguments
-    @unittest.expectedFailure 
+    @unittest.expectedFailure
     def test_element_factory(self):
         tb = ET.TreeBuilder(element_factory=lambda: ET.Element())