diff --git a/src/spec-2006/configs/system/caches.py b/src/spec-2006/configs/system/caches.py
index dc26d77..f15b741 100644
--- a/src/spec-2006/configs/system/caches.py
+++ b/src/spec-2006/configs/system/caches.py
@@ -44,7 +44,7 @@
 
 class PrefetchCache(Cache):
 
-    def __init__(self, options):
+    def __init__(self, options = None):
         super(PrefetchCache, self).__init__()
         if not options or options.no_prefetchers:
             return