diff --git a/product/ERP5Type/Cache.py b/product/ERP5Type/Cache.py
index 61441558f3ef430d2cef11ac7729f87598f98d62..9b45f2a216cb42bf823ef32402e21f17eeea6e3f 100644
--- a/product/ERP5Type/Cache.py
+++ b/product/ERP5Type/Cache.py
@@ -83,7 +83,7 @@ class CacheFactory:
     self.expire()
 
     quick_cached = self.quick_cache.get(cache_id, scope)
-    if quick_cached:
+    if quick_cached is not None:
       #print "HIT RAM", self.quick_cache
       return quick_cached.getValue()
     else: