diff --git a/network.cpp b/network.cpp
index 24f5013d..841c2bf2 100644
--- a/network.cpp
+++ b/network.cpp
@@ -62,7 +62,7 @@ double LimitedBandwidth::GetCurTimeAndCleanUp()
 	return curTime;
 }
 
-void LimitedBandwidth::GetWaitObjects(WaitObjectContainer &container, CallStack const& callStack)
+void LimitedBandwidth::GetWaitObjects(WaitObjectContainer &container, const CallStack &callStack)
 {
 	double nextTransceiveTime = TimeToNextTransceive();
 	if (nextTransceiveTime)
diff --git a/network.h b/network.h
index 4373862d..99ab6fb6 100644
--- a/network.h
+++ b/network.h
@@ -32,7 +32,7 @@ public:
 	/*! GetWaitObjects() must be called despite the 0 return from GetMaxWaitObjectCount();
 	    the 0 is because the ScheduleEvent() method is used instead of adding a wait object */
 	unsigned int GetMaxWaitObjectCount() const { return 0; }
-	void GetWaitObjects(WaitObjectContainer &container, CallStack const& callStack);
+	void GetWaitObjects(WaitObjectContainer &container, const CallStack &callStack);
 
 private:	
 	lword m_maxBytesPerSecond;