diff --git a/conntrackt/iptables.py b/conntrackt/iptables.py
--- a/conntrackt/iptables.py
+++ b/conntrackt/iptables.py
@@ -124,13 +124,15 @@ class Chain(object):
         """
 
         # Set-up the "header".
-        rendering = ":%s %s [0:0]\n" % (self.name, self.default)
+        rendering = ":%s %s [0:0]" % (self.name, self.default)
 
         # Group the rules by description.
-        previous_description=""
         rules = list(self.rules)
         rules.sort(key=attrgetter("description"))
 
+        # Use this property to figure out if we need new line separator.
+        previous_description=None
+
         # Process each rule.
         for rule in rules:
             if rule.description != previous_description:
@@ -139,6 +141,7 @@ class Chain(object):
                     rendering += "# %s\n" % rule.description
                 previous_description = rule.description
             rendering += "%s\n" % rule
+        rendering += "\n"
         return rendering
 
     def __str__(self):