diff --git a/pyanalyze/test_annotations.py b/pyanalyze/test_annotations.py
index 657e4ecf..7c1b4787 100644
--- a/pyanalyze/test_annotations.py
+++ b/pyanalyze/test_annotations.py
@@ -127,7 +127,7 @@ def capybara(x: X, y: Y) -> None:
     def test_literal(self):
         from typing_extensions import Literal
 
-        def capybara(x: Literal[True], y: Literal[True, False]) -> None:
+        def capybara(x: Literal[True], y: Literal[(True, False)]) -> None:
             assert_is_value(x, KnownValue(True))
             assert_is_value(y, MultiValuedValue([KnownValue(True), KnownValue(False)]))