diff --git a/tests/unit/library/test_json.py b/tests/unit/library/test_json.py
index 13ba90921..3f3505c02 100644
--- a/tests/unit/library/test_json.py
+++ b/tests/unit/library/test_json.py
@@ -2244,7 +2244,7 @@ def test_true_schema(self, target_obj):
         "schema_obj",
         [
             False,
-            {"type": "object", "properties": {"a": False}},
+            {"type": "object", "properties": {"a": False}, "required": ["a"]},
         ]
     )
     def test_false_schema(self, schema_obj):