diff --git a/libp2p/Network.cpp b/libp2p/Network.cpp
index 7a3b50385..b44ac1e0a 100644
--- a/libp2p/Network.cpp
+++ b/libp2p/Network.cpp
@@ -216,7 +216,7 @@ bi::tcp::endpoint Network::resolveHost(string const& _addr)
 	int givenPort;
 	try
 	{
-		givenPort = stoi(split[1]);
+		givenPort = stoi(split.at(1));
 	}
 	catch (...)
 	{