diff --git a/custom_components/speedport/device_tracker.py b/custom_components/speedport/device_tracker.py
index 9e917f2..4ab3e32 100644
--- a/custom_components/speedport/device_tracker.py
+++ b/custom_components/speedport/device_tracker.py
@@ -115,3 +115,7 @@ def _handle_coordinator_update(self) -> None:
         """Handle updated data from the coordinator."""
         self._device = self.coordinator.data.get(self._mac)
         self.async_write_ha_state()
+
+    @property
+    def available(self) -> bool:
+        return super().available and self._device is not None