diff --git a/homeassistant/components/alexa/entities.py b/homeassistant/components/alexa/entities.py
index b060d35be90..03d153f5927 100644
--- a/homeassistant/components/alexa/entities.py
+++ b/homeassistant/components/alexa/entities.py
@@ -264,7 +264,9 @@ class ClimateCapabilities(AlexaEntity):
     def interfaces(self):
         """Yield the supported interfaces."""
         # If we support two modes, one being off, we allow turning on too.
-        if climate.HVAC_MODE_OFF in self.entity.attributes[climate.ATTR_HVAC_MODES]:
+        if climate.HVAC_MODE_OFF in self.entity.attributes.get(
+            climate.ATTR_HVAC_MODES, []
+        ):
             yield AlexaPowerController(self.entity)
 
         yield AlexaThermostatController(self.hass, self.entity)