diff --git a/src/EterLib/NetStream.cpp b/src/EterLib/NetStream.cpp
index 9705948..af492ff 100644
--- a/src/EterLib/NetStream.cpp
+++ b/src/EterLib/NetStream.cpp
@@ -857,6 +857,11 @@ bool CNetworkStream::SendSequence()
 	return Send(sizeof(BYTE), &bSeq);
 }
 
+uint8_t CNetworkStream::GetNextSequence()
+{
+	return m_SequenceGenerator(UINT8_MAX + 1);
+}
+
 bool CNetworkStream::OnProcess()
 {
 	return true;
diff --git a/src/EterLib/NetStream.h b/src/EterLib/NetStream.h
index bd337d4..aba0009 100644
--- a/src/EterLib/NetStream.h
+++ b/src/EterLib/NetStream.h
@@ -53,6 +53,7 @@ class CNetworkStream
 
 		void SetPacketSequenceMode(bool isOn);
 		bool SendSequence();
+		uint8_t GetNextSequence();
 
 	protected:			
 		virtual void OnConnectSuccess();				
diff --git a/src/UserInterface/AccountConnector.cpp b/src/UserInterface/AccountConnector.cpp
index f8e89eb..74061ac 100644
--- a/src/UserInterface/AccountConnector.cpp
+++ b/src/UserInterface/AccountConnector.cpp
@@ -288,12 +288,11 @@ bool CAccountConnector::__AuthState_SendPong()
 {
 	TPacketCGPong kPacketPong;
 	kPacketPong.bHeader = HEADER_CG_PONG;
+	kPacketPong.bSequence = GetNextSequence();
+
 	if (!Send(sizeof(kPacketPong), &kPacketPong))
 		return false;
 
-	if (IsSecurityMode())
-		return SendSequence();
-
 	return true;
 }
 
diff --git a/src/UserInterface/GuildMarkDownloader.cpp b/src/UserInterface/GuildMarkDownloader.cpp
index 268226c..c3d4138 100644
--- a/src/UserInterface/GuildMarkDownloader.cpp
+++ b/src/UserInterface/GuildMarkDownloader.cpp
@@ -237,14 +237,12 @@ bool CGuildMarkDownloader::__LoginState_RecvPing()
 
 	TPacketCGPong kPacketPong;
 	kPacketPong.bHeader = HEADER_CG_PONG;
+	kPacketPong.bSequence = GetNextSequence();
 
 	if (!Send(sizeof(TPacketCGPong), &kPacketPong))
 		return false;
 
-	if (IsSecurityMode())
-		return SendSequence();
-	else
-		return true;
+	return true;
 }
 
 bool CGuildMarkDownloader::__LoginState_RecvPhase()
diff --git a/src/UserInterface/GuildMarkUploader.cpp b/src/UserInterface/GuildMarkUploader.cpp
index 46e6ffb..eabd2ee 100644
--- a/src/UserInterface/GuildMarkUploader.cpp
+++ b/src/UserInterface/GuildMarkUploader.cpp
@@ -376,14 +376,12 @@ bool CGuildMarkUploader::__LoginState_RecvPing()
 
 	TPacketCGPong kPacketPong;
 	kPacketPong.bHeader = HEADER_CG_PONG;
+	kPacketPong.bSequence = GetNextSequence();
 
 	if (!Send(sizeof(TPacketCGPong), &kPacketPong))
 		return false;
 
-	if (IsSecurityMode())
-		return SendSequence();
-	else
-		return true;
+	return true;
 }
 
 #ifdef _IMPROVED_PACKET_ENCRYPTION_
diff --git a/src/UserInterface/Packet.h b/src/UserInterface/Packet.h
index 9685abe..f05c83c 100644
--- a/src/UserInterface/Packet.h
+++ b/src/UserInterface/Packet.h
@@ -1784,6 +1784,7 @@ typedef struct packet_ping
 typedef struct packet_pong
 {
 	uint8_t		bHeader;
+	uint8_t		bSequence;
 } TPacketCGPong;
 
 typedef struct packet_script
diff --git a/src/UserInterface/PythonNetworkStream.cpp b/src/UserInterface/PythonNetworkStream.cpp
index fcd2bad..1d3d590 100644
--- a/src/UserInterface/PythonNetworkStream.cpp
+++ b/src/UserInterface/PythonNetworkStream.cpp
@@ -658,14 +658,12 @@ bool CPythonNetworkStream::RecvPingPacket()
 
 	TPacketCGPong kPacketPong;
 	kPacketPong.bHeader = HEADER_CG_PONG;
+	kPacketPong.bSequence = GetNextSequence();
 
 	if (!Send(sizeof(TPacketCGPong), &kPacketPong))
 		return false;
 
-	if (IsSecurityMode())
-		return SendSequence();
-	else
-		return true;
+	return true;
 }
 
 bool CPythonNetworkStream::RecvDefaultPacket(int header)