diff --git a/src/engine/server.h b/src/engine/server.h
index 8e901d0e2..25be9e6c8 100644
--- a/src/engine/server.h
+++ b/src/engine/server.h
@@ -237,7 +237,7 @@ public:
 
 	virtual char *GetMapName() = 0;
 
-	virtual bool IsSixup(int ClientID) = 0;
+	virtual bool IsSixup(int ClientID) const = 0;
 };
 
 class IGameServer : public IInterface
diff --git a/src/engine/server/server.cpp b/src/engine/server/server.cpp
index 5942eee9c..d27b70f8e 100644
--- a/src/engine/server/server.cpp
+++ b/src/engine/server/server.cpp
@@ -1446,7 +1446,7 @@ void CServer::ProcessClientPacket(CNetChunk *pPacket)
 				net_addr_str(m_NetServer.ClientAddr(ClientID), aAddrStr, sizeof(aAddrStr), true);
 
 				char aBuf[256];
-				str_format(aBuf, sizeof(aBuf), "player has entered the game. ClientID=%d addr=<{%s}>", ClientID, aAddrStr);
+				str_format(aBuf, sizeof(aBuf), "player has entered the game. ClientID=%d addr=<{%s}> sixup=%d", ClientID, aAddrStr, IsSixup(ClientID));
 				Console()->Print(IConsole::OUTPUT_LEVEL_STANDARD, "server", aBuf);
 				m_aClients[ClientID].m_State = CClient::STATE_INGAME;
 				if(IsSixup(ClientID))
diff --git a/src/engine/server/server.h b/src/engine/server/server.h
index 06cd1756f..158553a84 100644
--- a/src/engine/server/server.h
+++ b/src/engine/server/server.h
@@ -446,7 +446,7 @@ public:
 	bool ErrorShutdown() const { return m_aErrorShutdownReason[0] != 0; }
 	void SetErrorShutdown(const char *pReason);
 
-	bool IsSixup(int ClientID) { return m_aClients[ClientID].m_Sixup; }
+	bool IsSixup(int ClientID) const { return m_aClients[ClientID].m_Sixup; }
 
 #ifdef CONF_FAMILY_UNIX
 	enum CONN_LOGGING_CMD