diff --git a/devices/PCC.py b/devices/PCC.py
index 4a76f5120f2ccde0c035821223e123e073c635cb..2ea322dbf8a39ea6b1574c9c0e5b6e7b0eab2966 100644
--- a/devices/PCC.py
+++ b/devices/PCC.py
@@ -120,7 +120,7 @@ class PCC(hardware_device):
 		""" user code here. is called when the state is set to OFF """
 
 		# Stop keep-alive
-		self.opcua_connection.stop()
+		self.OPCua_client.disconnect()
 
 	def initialise(self):
 		""" user code here. is called when the state is set to INIT """