diff --git a/devices.py b/devices.py
index cee3071..d2100c9 100644
--- a/devices.py
+++ b/devices.py
@@ -645,7 +645,7 @@ class FrappyNode(SecNodeDevice, Moveable):
 
     def _disconnect(self):
         super()._disconnect()
-        self.target = ''
+        self._setROParam('target', '')
 
     def get_info(self):
         result = self.doRead() or ''