diff --git a/Lib/test/test_future1.py b/Lib/test/test_future1.py
index 05896618711..b0d2a5c12ea 100644
--- a/Lib/test/test_future1.py
+++ b/Lib/test/test_future1.py
@@ -1,5 +1,7 @@
 """This is a test"""
-from __future__ import nested_scopes
+
+# Import the name nested_scopes twice to trigger SF bug #407394 (regression).
+from __future__ import nested_scopes, nested_scopes
 
 def f(x):
     def g(y):