diff --git a/simso/core/Caches.py b/simso/core/Caches.py
index dea5d42..8a75f36 100644
--- a/simso/core/Caches.py
+++ b/simso/core/Caches.py
@@ -14,8 +14,8 @@ class Cache(object):
 
 
 class Cache_LRU(Cache):
-    def __init__(self, name, identifier, size, associativity, penalty):
-        Cache.__init__(self, name, identifier, size, associativity, penalty)
+    def __init__(self, name, identifier, size, associativity, access_time):
+        Cache.__init__(self, name, identifier, size, associativity, access_time)
         self._groups = None
 
     def init(self):