diff --git a/model/pit/ndn-pit-impl.cc b/model/pit/ndn-pit-impl.cc
index bb8e42a..da3f4f3 100644
--- a/model/pit/ndn-pit-impl.cc
+++ b/model/pit/ndn-pit-impl.cc
@@ -170,8 +170,9 @@
 template<class Policy>
 void
 PitImpl<Policy>::RescheduleCleaning ()
-{
-  m_cleanEvent.Cancel ();
+{  
+  // m_cleanEvent.Cancel ();
+  Simulator::Remove (m_cleanEvent); // slower, but better for memory
   if (i_time.empty ())
     {
       // NS_LOG_DEBUG ("No items in PIT");