diff --git a/DAS/validator.py b/DAS/node.py
similarity index 100%
rename from DAS/validator.py
rename to DAS/node.py
diff --git a/DAS/simulator.py b/DAS/simulator.py
index e2db9f4..fee4f5a 100644
--- a/DAS/simulator.py
+++ b/DAS/simulator.py
@@ -8,7 +8,7 @@ from datetime import datetime
 from DAS.tools import *
 from DAS.results import *
 from DAS.observer import *
-from DAS.validator import *
+from DAS.node import *
 
 class Simulator:
     """This class implements the main DAS simulator."""