diff --git a/aiorussound/rio.py b/aiorussound/rio.py
index a0eda7d..c4a9a85 100644
--- a/aiorussound/rio.py
+++ b/aiorussound/rio.py
@@ -374,10 +374,14 @@ async def _load_controller(self, controller_id: int) -> Optional[Controller]:
                     device_str, "firmwareVersion"
                 )
             controller = Controller(
-                controller_id, controller_type, mac_address, firmware_version, {}
+                controller_id,
+                controller_type,
+                self,
+                controller_device_str(controller_id),
+                mac_address,
+                firmware_version,
+                {},
             )
-            controller.client = self
-            controller.device_str = controller_device_str(controller_id)
             return controller
         except CommandError:
             return None
@@ -465,11 +469,13 @@ async def select_source(self, source: int) -> str:
 
 
 @dataclass
-class Controller(AbstractControlSurface):
+class Controller:
     """Data class representing a Russound controller."""
 
     controller_id: int
     controller_type: str
+    client: RussoundClient
+    device_str: str
     mac_address: Optional[str]
     firmware_version: Optional[str]
     zones: dict[int, ZoneControlSurface] = field(default_factory=dict)
diff --git a/pyproject.toml b/pyproject.toml
index fc7db61..082318c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "aiorussound"
-version = "4.0.2"
+version = "4.0.3"
 description = "Asyncio client for Russound RIO devices."
 authors = ["Noah Husby <opensource@husbylabs.com>"]
 maintainers = ["Noah Husby <opensource@husbylabs.com>"]