diff --git a/tests/basics/dict_fromkeys.py b/tests/basics/dict_fromkeys.py
index 75451fb756..bfad347c89 100644
--- a/tests/basics/dict_fromkeys.py
+++ b/tests/basics/dict_fromkeys.py
@@ -8,6 +8,6 @@ l = list(d.values())
 l.sort()
 print(l)
 
-# argument to fromkeys is a generator
-d = dict.fromkeys(i + 1 for i in range(1))
+# argument to fromkeys has no __len__
+d = dict.fromkeys(reversed(range(1)))
 print(d)