diff --git a/custom_components/programmable_thermostat/config_flow.py b/custom_components/programmable_thermostat/config_flow.py
index 5b88690..03e2f29 100644
--- a/custom_components/programmable_thermostat/config_flow.py
+++ b/custom_components/programmable_thermostat/config_flow.py
@@ -101,6 +101,7 @@ async def async_step_final(self, user_input={}):
         if user_input is not None and user_input != {}:
             if self.are_third_step_data_valid(user_input):
                 self._data.update(user_input)
+                self._data[CONF_RELATED_CLIMATE] = self.string_to_list(self._data[CONF_RELATED_CLIMATE])
                 self._data[CONF_MIN_CYCLE_DURATION] = self.string_to_timedelta(self._data[CONF_MIN_CYCLE_DURATION])
                 final_data = {}
                 for key in self._data.keys():