diff --git a/IRCSock.cpp b/IRCSock.cpp
index 89b23d84..5fcb99c6 100644
--- a/IRCSock.cpp
+++ b/IRCSock.cpp
@@ -106,6 +106,13 @@ void CIRCSock::ReadLine(const CString& sData) {
 
 		switch (uRaw) {
 			case 1:	{// :irc.server.com 001 nick :Welcome to the Internet Relay Network nick
+				if (m_bAuthed && sServer == "irc.znc.in") {
+					// m_bAuthed == true => we already received another 001 => we might be in a traffic loop
+					m_pUser->PutStatus("ZNC seems to be connected to itself, disconnecting...");
+					Quit();
+					return;
+				}
+
 				m_pUser->SetIRCServer(sServer);
 				SetTimeout(240, TMO_READ);	// Now that we are connected, let nature take its course
 				PutIRC("WHO " + sNick);