diff --git a/utils/trie/freshness-policy.h b/utils/trie/freshness-policy.h
index e123d73..d22b624 100644
--- a/utils/trie/freshness-policy.h
+++ b/utils/trie/freshness-policy.h
@@ -53,14 +53,14 @@
   template<class Base,
            class Container,
            class Hook>
-  struct policy 
+  struct policy
   {
     static Time& get_freshness (typename Container::iterator item)
     {
       return static_cast<typename policy_container::value_traits::hook_type*>
         (policy_container::value_traits::to_node_ptr(*item))->timeWhenShouldExpire;
     }
-      
+
     static const Time& get_freshness (typename Container::const_iterator item)
     {
       return static_cast<const typename policy_container::value_traits::hook_type*>
@@ -80,7 +80,7 @@
                                    boost::intrusive::compare< MemberHookLess< Container > >,
                                    Hook > policy_container;
 
-    
+
     class type : public policy_container
     {
     public:
@@ -96,9 +96,9 @@
       inline void
       update (typename parent_trie::iterator item)
       {
-        // do nothing. it's random policy
+        // do nothing
       }
-  
+
       inline bool
       insert (typename parent_trie::iterator item)
       {
@@ -115,13 +115,13 @@
 
         return true;
       }
-  
+
       inline void
       lookup (typename parent_trie::iterator item)
       {
         // do nothing. it's random policy
       }
-  
+
       inline void
       erase (typename parent_trie::iterator item)
       {
@@ -152,7 +152,7 @@
 
     private:
       type () : base_(*((Base*)0)) { };
-      
+
     private:
       Base &base_;
       size_t max_size_;