diff --git a/tests/unit/serialization/compact_test.py b/tests/unit/serialization/compact_test.py
index 957f8faa9b..663912b6c3 100644
--- a/tests/unit/serialization/compact_test.py
+++ b/tests/unit/serialization/compact_test.py
@@ -87,7 +87,7 @@ def test_constructor(self):
         fields = [
             FieldDescriptor(kind.name, kind)
             for kind in FieldKind
-            if kind is not FieldKind.NOT_AVAILABLE
+            if FIELD_OPERATIONS[kind] is not None
         ]
         schema = Schema("something", fields)
         self._verify_schema(schema, fields)