diff --git a/cbpi/__init__.py b/cbpi/__init__.py
index 8ec8c56..7455d4e 100644
--- a/cbpi/__init__.py
+++ b/cbpi/__init__.py
@@ -1 +1 @@
-__version__ = "4.0.0.46"
+__version__ = "4.0.0.47"
diff --git a/cbpi/controller/kettle_controller.py b/cbpi/controller/kettle_controller.py
index a97d75b..46a5afe 100644
--- a/cbpi/controller/kettle_controller.py
+++ b/cbpi/controller/kettle_controller.py
@@ -37,7 +37,8 @@ class KettleController(BasicController):
         try:
             logging.info("Stop Kettele {}".format(id))
             item = self.find_by_id(id)
-            await item.instance.stop()
+			if item.instance:
+				await item.instance.stop()
             await self.push_udpate()
         except Exception as e:
             logging.error("Failed to switch off KettleLogic {} {}".format(id, e))