diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py
index 899db61..4992a32 100644
--- a/Lib/test/test_syntax.py
+++ b/Lib/test/test_syntax.py
@@ -468,6 +468,12 @@
   File "<doctest test.test_syntax[50]>", line 1
 SyntaxError: can't delete ()
 
+>>> {1, 2, 3} = 42
+Traceback (most recent call last):
+   ...
+   File "<doctest test.test_syntax[50]>", line 1
+SyntaxError: can't assign to literal
+
 """
 
 import re