diff --git a/sky/utils/controller_utils.py b/sky/utils/controller_utils.py
index eef48dc558c..7ed5a722e05 100644
--- a/sky/utils/controller_utils.py
+++ b/sky/utils/controller_utils.py
@@ -324,6 +324,8 @@ def get_controller_resources(
         if res.cloud is not None and not clouds.cloud_in_iterable(
                 res.cloud, requested_clouds):
             requested_clouds.add(res.cloud)
+    if not requested_clouds:
+        return {controller_resources_to_use}
     return {
         controller_resources_to_use.copy(cloud=controller_cloud)
         for controller_cloud in requested_clouds
diff --git a/tests/unit_tests/test_controller_utils.py b/tests/unit_tests/test_controller_utils.py
index 57490139f8b..673d208a642 100644
--- a/tests/unit_tests/test_controller_utils.py
+++ b/tests/unit_tests/test_controller_utils.py
@@ -52,8 +52,12 @@ def get_custom_controller_resources(keys, default):
     monkeypatch.setattr('sky.skypilot_config.get_nested',
                         get_custom_controller_resources)
 
-    controller_resources = controller_utils.get_controller_resources(
-        controller_type, controller_resources_config)
+    controller_resources = list(
+        controller_utils.get_controller_resources(
+            controller_type=controller_type,
+            controller_name='dummy',
+            controller_resources_config=controller_resources_config,
+            task_resources=[]))[0]
     controller_resources_config = controller_resources.to_yaml_config()
     for k, v in expected.items():
         assert controller_resources_config[k] == v, (