diff --git a/homeassistant/components/harmony/select.py b/homeassistant/components/harmony/select.py
index 204e8ee4bd5..0ed3f0ca275 100644
--- a/homeassistant/components/harmony/select.py
+++ b/homeassistant/components/harmony/select.py
@@ -67,6 +67,7 @@ class HarmonyActivitySelect(HarmonyEntity, SelectEntity):
         """Change the current activity."""
         if option == TRANSLATABLE_POWER_OFF:
             await self._data.async_start_activity(ACTIVITY_POWER_OFF)
+            return
         await self._data.async_start_activity(option)
 
     async def async_added_to_hass(self) -> None: