diff --git a/tests/test_domain_cpp.py b/tests/test_domain_cpp.py
index 96f03d61191..e811af335ae 100644
--- a/tests/test_domain_cpp.py
+++ b/tests/test_domain_cpp.py
@@ -1000,8 +1000,7 @@ def test_domain_cpp_ast_attributes():
     check('class', '{key}[[nodiscard]] Foo', {1: 'Foo', 2: '3Foo'}, key='class')
     check('union', '{key}[[nodiscard]] Foo', {1: None, 2: '3Foo'}, key='union')
     # position: enum
-    check('enum', '{key}[[nodiscard]] Foo', {1: None, 2: '3Foo', 3: '3Foo', 4: '3Foo'},
-          key='enum')
+    check('enum', '{key}[[nodiscard]] Foo', {1: None, 2: '3Foo'}, key='enum')
 
 
 def test_domain_cpp_ast_xref_parsing():