diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py
index 0484513..b42caa3 100644
--- a/Lib/test/test_ast.py
+++ b/Lib/test/test_ast.py
@@ -128,7 +128,7 @@
     raise SystemExit
 
 def test_order(ast_node, parent_pos):
-    
+
     if not isinstance(ast_node, _ast.AST) or ast_node._fields == None:
         return
     if isinstance(ast_node, (_ast.expr, _ast.stmt)):