diff --git a/tests/basics/set_union.py b/tests/basics/set_union.py
index 2adcc972c..572d12f66 100644
--- a/tests/basics/set_union.py
+++ b/tests/basics/set_union.py
@@ -1 +1 @@
-print({1}.union({2}))
+print(sorted({1}.union({2})))