diff --git a/pytec/pytec/gui/model/thermostat.py b/pytec/pytec/gui/model/thermostat.py
index ea3191f..a788469 100644
--- a/pytec/pytec/gui/model/thermostat.py
+++ b/pytec/pytec/gui/model/thermostat.py
@@ -51,6 +51,7 @@ class Thermostat(QObject, metaclass=PropertyMeta):
                             "Encountered an error while updating parameter tree.",
                             exc_info=True,
                         )
+                        self._watch_task.cancel()
                 _ = self.task.result()
                 self.task = asyncio.create_task(self.update_params())
             await asyncio.sleep(self._update_s)