diff --git a/Lib/ldif.py b/Lib/ldif.py
index e06cbd3..f68838e 100644
--- a/Lib/ldif.py
+++ b/Lib/ldif.py
@@ -152,9 +152,7 @@ def _unparseEntryRecord(self,entry):
     entry
         dictionary holding an entry
     """
-    attr_types = entry.keys()[:]
-    attr_types.sort()
-    for attr_type in attr_types:
+    for attr_type in sorted(entry.keys()):
       for attr_value in entry[attr_type]:
         self._unparseAttrTypeandValue(attr_type,attr_value)