diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py
index 45ca9b9aafd6e0..ba25664faa3e48 100644
--- a/Lib/test/test_ast.py
+++ b/Lib/test/test_ast.py
@@ -1092,7 +1092,7 @@ def test_compare_modified_ast(self):
         self.assertFalse(ast.compare(b, a))
 
         b._fields = a._fields
-        b.spam = "Spam"
+        b.spam = a.spam
         self.assertTrue(ast.compare(a, b))
         self.assertTrue(ast.compare(b, a))