diff --git a/mypy/test/teststubgen.py b/mypy/test/teststubgen.py
index 84811a8b43ad..41f93b7db45e 100644
--- a/mypy/test/teststubgen.py
+++ b/mypy/test/teststubgen.py
@@ -946,16 +946,17 @@ class TestClass:
 
     @unittest.skipIf(sys.version_info < (3, 12), "Inline Generics not supported before Python3.12")
     def test_generic_class(self) -> None:
-        # mypy: enable-incomplete-feature=NewGenericSyntax
-        exec("class Test[A]: ...")
-
-        class TestClass[A]: ...
-
-        output: list[str] = []
-        mod = ModuleType("module", "")
-        gen = InspectionStubGenerator(mod.__name__, known_modules=[mod.__name__], module=mod)
-        gen.generate_class_stub("C", TestClass, output)
-        assert_equal(output, ["class C[A]: ..."])
+        # This test lives in the exec block to avoid syntax version on python versions < 3.12
+        code = """
+class Test[A]: ...
+
+output: list[str] = []
+mod = ModuleType("module", "")
+gen = InspectionStubGenerator(mod.__name__, known_modules=[mod.__name__], module=mod)
+gen.generate_class_stub("C", Test, output)
+assert_equal(output, ["class C[A]: ..."])
+        """
+        exec(code)
 
     @unittest.skipIf(sys.version_info < (3, 12), "Inline Generics not supported before Python3.12")
     def test_inline_generic_function(self) -> None: