--- a/pvl/verkko/leases.py	Sat Jan 26 22:18:55 2013 +0200
+++ b/pvl/verkko/leases.py	Sun Jan 27 14:48:40 2013 +0200
@@ -32,7 +32,7 @@
             return None
     
     def ends_class (self) :
-        if self.ends > datetime.datetime.now() :
+        if self.ends and self.ends > datetime.datetime.now() :
             return 'active'
         else :
             return None
@@ -53,7 +53,7 @@
 
 class LeasesTable (table.Table) :
     """
-        Table of leases.
+        <table> of leases.
     """
 
     ITEMS   = "Leases"
@@ -88,7 +88,7 @@
         "/static/dhcp/hosts.css", 
     )
     
-    # model
+    # view
     TABLE = LeasesTable
 
     def query (self) :