diff --git a/src/core/model/realtime-simulator-impl.cc b/src/core/model/realtime-simulator-impl.cc
index b44c7a652..c8b79fbcb 100644
--- a/src/core/model/realtime-simulator-impl.cc
+++ b/src/core/model/realtime-simulator-impl.cc
@@ -820,7 +820,7 @@ RealtimeSimulatorImpl::GetContext (void) const
 }
 
 uint64_t
-RealTimeSimulatorImpl::GetEventCount (void) const
+RealtimeSimulatorImpl::GetEventCount (void) const
 {
   return m_eventCount;
 }
diff --git a/src/core/model/realtime-simulator-impl.h b/src/core/model/realtime-simulator-impl.h
index d1edf7404..6e78d2a7e 100644
--- a/src/core/model/realtime-simulator-impl.h
+++ b/src/core/model/realtime-simulator-impl.h
@@ -36,7 +36,7 @@
 /**
  * \file
  * \ingroup realtime
- * ns3::RealTimeSimulatorImpl declaration.
+ * ns3::RealtimeSimulatorImpl declaration.
  */
 
 namespace ns3 {