diff --git a/src/ZODB/StorageTypes.py b/src/ZODB/StorageTypes.py
index d1a0683e57e90e8c3cfdb04810266e67ac6e5a99..a0d7c35009728dd40fc0982c346655e26e1601a9 100644
--- a/src/ZODB/StorageTypes.py
+++ b/src/ZODB/StorageTypes.py
@@ -43,9 +43,6 @@ def convertFileStorageArgs(quota=None, stop=None, **kw):
         if kw.has_key(name):
             kw[name] = asBoolean(kw[name])
 
-    if not kw.has_key('file_name'):
-        raise RuntimeError, 'A file_name argument is required for FileStorage'
-
     return kw