diff --git a/tests/test_union_body_discriminator_annotated.py b/tests/test_union_body_discriminator_annotated.py
index 6644d106c..462350be9 100644
--- a/tests/test_union_body_discriminator_annotated.py
+++ b/tests/test_union_body_discriminator_annotated.py
@@ -73,7 +73,7 @@ def test_openapi_schema(client: TestClient) -> None:
                             "content": {
                                 "application/json": {
                                     "schema": {
-                                        "anyOf": [
+                                        "oneOf": [
                                             {"$ref": "#/components/schemas/Cat"},
                                             {"$ref": "#/components/schemas/Dog"},
                                         ],