diff --git a/smartobject.py b/smartobject.py
index d00332c..8a60dab 100644
--- a/smartobject.py
+++ b/smartobject.py
@@ -114,10 +114,10 @@ class SmartObject(hass.Hass,LoggerInterface):
         if state_class is not None: attributes['state_class'] = state_class
 
         if state is not None:
-            entity.set_state(state=state, attributes=attributes)
+            entity.set_state(state=state, attributes=attributes, check_existence=False)
         else:
             if not entity.exists():
-                entity.set_state(state='unknown')
+                entity.set_state(state='unknown', check_existence=False)
             entity.set_state(attributes=attributes)
 
         return entity