diff --git a/src/simulator/event-id.cc b/src/simulator/event-id.cc
index 7357070b0..18f875935 100644
--- a/src/simulator/event-id.cc
+++ b/src/simulator/event-id.cc
@@ -70,5 +70,18 @@ EventId::GetUid (void) const
   return m_uid;
 }
 
+bool operator == (const EventId &a, const EventId &b)
+{
+  return 
+    a.m_uid == b.m_uid && 
+    a.m_ts == b.m_ts && 
+    a.m_eventImpl == b.m_eventImpl;
+}
+bool operator != (const EventId &a, const EventId &b)
+{
+  return !(a == b);
+}
+
+
 
 }; // namespace ns3
diff --git a/src/simulator/event-id.h b/src/simulator/event-id.h
index a7514289d..4350c9bbe 100644
--- a/src/simulator/event-id.h
+++ b/src/simulator/event-id.h
@@ -55,11 +55,15 @@ public:
   uint64_t GetTs (void) const;
   uint32_t GetUid (void) const;
 private:
+  friend bool operator == (const EventId &a, const EventId &b);
   EventImpl *m_eventImpl;
   uint64_t m_ts;
   uint32_t m_uid;
 };
 
+bool operator == (const EventId &a, const EventId &b);
+bool operator != (const EventId &a, const EventId &b);
+
 }; // namespace ns3
 
 #endif /* EVENT_ID_H */