diff --git a/Source/CCRakNetSlidingWindow.cpp b/Source/CCRakNetSlidingWindow.cpp
index d8c25d3d6..d5b2eefd6 100644
--- a/Source/CCRakNetSlidingWindow.cpp
+++ b/Source/CCRakNetSlidingWindow.cpp
@@ -198,11 +198,11 @@ void CCRakNetSlidingWindow::OnNAK(CCTimeType curTime, DatagramSequenceNumberType
 	}
 }
 // ----------------------------------------------------------------------------------------------------------------------------
-void CCRakNetSlidingWindow::OnAck(CCTimeType curTime, CCTimeType rtt, bool hasBAndAS, BytesPerMicrosecond _BB, BytesPerMicrosecond _AS, double totalUserDataBytesAcked, bool isContinuousSend, DatagramSequenceNumberType sequenceNumber )
+void CCRakNetSlidingWindow::OnAck(CCTimeType curTime, CCTimeType rtt, bool hasBAndAS, BytesPerMicrosecond BB_, BytesPerMicrosecond AS_, double totalUserDataBytesAcked, bool isContinuousSend, DatagramSequenceNumberType sequenceNumber )
 {
-	(void) _BB;
+	(void) BB_;
 	(void) totalUserDataBytesAcked;
-	(void) _AS;
+	(void) AS_;
 	(void) hasBAndAS;
 	(void) curTime;
 	(void) rtt;
@@ -261,11 +261,11 @@ void CCRakNetSlidingWindow::OnDuplicateAck( CCTimeType curTime, DatagramSequence
 	(void) sequenceNumber;
 }
 // ----------------------------------------------------------------------------------------------------------------------------
-void CCRakNetSlidingWindow::OnSendAckGetBAndAS(CCTimeType curTime, bool *hasBAndAS, BytesPerMicrosecond *_BB, BytesPerMicrosecond *_AS)
+void CCRakNetSlidingWindow::OnSendAckGetBAndAS(CCTimeType curTime, bool *hasBAndAS, BytesPerMicrosecond *BB_, BytesPerMicrosecond *AS_)
 {
 	(void) curTime;
-	(void) _BB;
-	(void) _AS;
+	(void) BB_;
+	(void) AS_;
 
 	*hasBAndAS=false;
 }
diff --git a/Source/CCRakNetSlidingWindow.h b/Source/CCRakNetSlidingWindow.h
index 9fe7a6371..e945b9829 100644
--- a/Source/CCRakNetSlidingWindow.h
+++ b/Source/CCRakNetSlidingWindow.h
@@ -129,12 +129,12 @@ class CCRakNetSlidingWindow
 	/// hasBAndAS are possibly written with the ack, see OnSendAck()
 	/// B and AS are used in the calculations in UpdateWindowSizeAndAckOnAckPerSyn
 	/// B and AS are updated at most once per SYN 
-	void OnAck(CCTimeType curTime, CCTimeType rtt, bool hasBAndAS, BytesPerMicrosecond _BB, BytesPerMicrosecond _AS, double totalUserDataBytesAcked, bool isContinuousSend, DatagramSequenceNumberType sequenceNumber );
+	void OnAck(CCTimeType curTime, CCTimeType rtt, bool hasBAndAS, BytesPerMicrosecond BB_, BytesPerMicrosecond AS_, double totalUserDataBytesAcked, bool isContinuousSend, DatagramSequenceNumberType sequenceNumber );
 	void OnDuplicateAck( CCTimeType curTime, DatagramSequenceNumberType sequenceNumber );
 	
 	/// Call when you send an ack, to see if the ack should have the B and AS parameters transmitted
 	/// Call before calling OnSendAck()
-	void OnSendAckGetBAndAS(CCTimeType curTime, bool *hasBAndAS, BytesPerMicrosecond *_BB, BytesPerMicrosecond *_AS);
+	void OnSendAckGetBAndAS(CCTimeType curTime, bool *hasBAndAS, BytesPerMicrosecond *BB_, BytesPerMicrosecond *AS_);
 
 	/// Call when we send an ack, to write B and AS if needed
 	/// B and AS are only written once per SYN, to prevent slow calculations