diff --git a/src/pytest_celery/api/setup.py b/src/pytest_celery/api/setup.py
index 1b9a19e0b..bb15a1f72 100644
--- a/src/pytest_celery/api/setup.py
+++ b/src/pytest_celery/api/setup.py
@@ -64,34 +64,34 @@ def app(self) -> Celery:
         return self._app
 
     @property
-    def backend_cluster(self) -> CeleryBackendCluster:
+    def backend_cluster(self) -> CeleryBackendCluster | None:
         """The backend cluster of this setup."""
         return self._backend_cluster
 
     @property
-    def backend(self) -> CeleryTestBackend:
+    def backend(self) -> CeleryTestBackend | None:
         """The first backend node of the backend cluster."""
-        return self._backend_cluster[0]  # type: ignore
+        return self._backend_cluster[0] if self._backend_cluster else None
 
     @property
-    def broker_cluster(self) -> CeleryBrokerCluster:
+    def broker_cluster(self) -> CeleryBrokerCluster | None:
         """The broker cluster of this setup."""
         return self._broker_cluster
 
     @property
-    def broker(self) -> CeleryTestBroker:
+    def broker(self) -> CeleryTestBroker | None:
         """The first broker node of the broker cluster."""
-        return self._broker_cluster[0]  # type: ignore
+        return self._broker_cluster[0] if self._broker_cluster else None
 
     @property
-    def worker_cluster(self) -> CeleryWorkerCluster:
+    def worker_cluster(self) -> CeleryWorkerCluster | None:
         """The worker cluster of this setup."""
         return self._worker_cluster
 
     @property
-    def worker(self) -> CeleryTestWorker:
+    def worker(self) -> CeleryTestWorker | None:
         """The first worker node of the worker cluster."""
-        return self._worker_cluster[0]  # type: ignore
+        return self._worker_cluster[0] if self._worker_cluster else None
 
     @classmethod
     def name(cls) -> str:
diff --git a/tests/integration/api/test_setup.py b/tests/integration/api/test_setup.py
index 26ed7b0d7..c8d3ce2fc 100644
--- a/tests/integration/api/test_setup.py
+++ b/tests/integration/api/test_setup.py
@@ -4,6 +4,7 @@
 from celery import Celery
 
 from pytest_celery import RESULT_TIMEOUT
+from pytest_celery import CeleryBackendCluster
 from pytest_celery import CeleryTestSetup
 from pytest_celery import CeleryTestWorker
 from tests.tasks import identity
@@ -59,3 +60,12 @@ def test_apply_async(self, celery_setup: CeleryTestSetup):
             queue = worker.worker_queue
             r = identity.s("test_ready").apply_async(queue=queue)
             assert r.get(timeout=RESULT_TIMEOUT) == "test_ready"
+
+    class test_disabling_backend_cluster:
+        @pytest.fixture
+        def celery_backend_cluster(self) -> CeleryBackendCluster:
+            return None
+
+        def test_disabling_backend_cluster(self, celery_setup: CeleryTestSetup):
+            assert celery_setup.backend_cluster is None
+            assert celery_setup.backend is None
diff --git a/tests/unit/api/test_setup.py b/tests/unit/api/test_setup.py
index ebdb95fb0..11d4752b6 100644
--- a/tests/unit/api/test_setup.py
+++ b/tests/unit/api/test_setup.py
@@ -3,6 +3,7 @@
 import pytest
 from celery import Celery
 
+from pytest_celery import CeleryBackendCluster
 from pytest_celery import CeleryTestBackend
 from pytest_celery import CeleryTestBroker
 from pytest_celery import CeleryTestSetup
@@ -67,3 +68,12 @@ def test_ready(self, celery_setup: CeleryTestSetup, confirmation: dict):
             **confirmation,
             control=False,  # Not supported in unit tests
         )
+
+    class test_disabling_backend_cluster:
+        @pytest.fixture
+        def celery_backend_cluster(self) -> CeleryBackendCluster:
+            return None
+
+        def test_disabling_backend_cluster(self, celery_setup: CeleryTestSetup):
+            assert celery_setup.backend_cluster is None
+            assert celery_setup.backend is None