diff --git a/xmlobject.py b/xmlobject.py
index 92be0a5..851551d 100644
--- a/xmlobject.py
+++ b/xmlobject.py
@@ -11,7 +11,7 @@
 # FOR A PARTICULAR PURPOSE.
 #
 ##############################################################################
-"""Service manager interfaces
+"""Support classes for XML-based tree
 
 $Id$
 """
@@ -70,7 +70,7 @@ def children_utility(self, container):
 
         keys = list(container.keys())
 
-        # include the service manager
+        # include the site manager
         keys.append('++etc++site')
 
         for name in keys:
@@ -123,7 +123,7 @@ def singleBranchTree(self, root=''):
             else:
                 keys = []
 
-            # include the service manager
+            # include the site manager
             keys.append('++etc++site')
 
             for name in keys: