Fix preset modes error in Smartthings (home-assistant#105375)

Roeland54 · Dec 9, 2023 · f37f40c · f37f40c
1 parent 25586f9
commit f37f40c
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/homeassistant/components/smartthings/climate.py b/homeassistant/components/smartthings/climate.py
@@ -528,10 +528,10 @@ def swing_mode(self) -> str:
 
     def _determine_preset_modes(self) -> list[str] | None:
         """Return a list of available preset modes."""
-        supported_modes = self._device.status.attributes[
+        supported_modes: list | None = self._device.status.attributes[
             "supportedAcOptionalMode"
         ].value
-        if WINDFREE in supported_modes:
+        if supported_modes and WINDFREE in supported_modes:
             return [WINDFREE]
         return None