diff --git a/Products/zms/_objattrs.py b/Products/zms/_objattrs.py
index de98675c..9018c3b7 100644
--- a/Products/zms/_objattrs.py
+++ b/Products/zms/_objattrs.py
@@ -563,7 +563,7 @@ def getObjProperty(self, key, REQUEST={}, par=None):
       
       # Special attributes.
       if key not in obj_attrs.keys():
-        value = self.nvl(self.evalMetaobjAttr(key), '')
+        value = standard.nvl(self.evalMetaobjAttr(key), '')
         if not isinstance(value, _blobfields.MyBlob) and (isinstance(value, Image) or isinstance(value, File)):
           value = _blobfields.MyBlobWrapper(value)