diff --git a/pytec/pytec/gui/model/thermostat.py b/pytec/pytec/gui/model/thermostat.py
index b90d03b..33c442c 100644
--- a/pytec/pytec/gui/model/thermostat.py
+++ b/pytec/pytec/gui/model/thermostat.py
@@ -8,9 +8,9 @@ from pytec.aioclient import AsyncioClient
 
 
 class ThermostatConnectionState(Enum):
-    DISCONNECTED = False
+    DISCONNECTED = "disconnected"
     CONNECTING = "connecting"
-    CONNECTED = True
+    CONNECTED = "connected"
 
 
 class Thermostat(QObject, metaclass=PropertyMeta):