diff --git a/src/net/common/clientstate.cpp b/src/net/common/clientstate.cpp
index 5130008d..197f4984 100644
--- a/src/net/common/clientstate.cpp
+++ b/src/net/common/clientstate.cpp
@@ -1408,6 +1408,9 @@ ClientStateWaitJoin::InternalHandlePacket(boost::shared_ptr<ClientThread> client
 				case joinGameFailureReason_invalidSettings :
 					failureCode = NTF_NET_JOIN_INVALID_SETTINGS;
 					break;
+				case joinGameFailureReason_ipAddressBlocked :
+					failureCode = NTF_NET_JOIN_IP_BLOCKED;
+					break;
 				default :
 					failureCode = NTF_NET_INTERNAL;
 					break;
diff --git a/src/net/common/serverlobbythread.cpp b/src/net/common/serverlobbythread.cpp
index ad1cf152..09a93fc4 100644
--- a/src/net/common/serverlobbythread.cpp
+++ b/src/net/common/serverlobbythread.cpp
@@ -1404,7 +1404,7 @@ ServerLobbyThread::HandleNetPacketJoinGame(SessionWrapper session, const std::st
 			&& session.sessionData->GetClientAddr() != SERVER_ADDRESS_LOCALHOST_STR
 			&& game.IsClientAddressConnected(session.sessionData->GetClientAddr()))
 		{
-			SendJoinGameFailed(session.sessionData, joinGame.gameId, NTF_NET_JOIN_GAME_FULL);
+			SendJoinGameFailed(session.sessionData, joinGame.gameId, NTF_NET_JOIN_IP_BLOCKED);
 		}
 		else
 		{
@@ -2009,6 +2009,9 @@ ServerLobbyThread::SendJoinGameFailed(boost::shared_ptr<SessionData> s, unsigned
 		case NTF_NET_JOIN_INVALID_SETTINGS :
 			joinFailed->joinGameFailureReason = joinGameFailureReason_invalidSettings;
 			break;
+		case NTF_NET_JOIN_IP_BLOCKED :
+			joinFailed->joinGameFailureReason = joinGameFailureReason_ipAddressBlocked;
+			break;
 		default :
 			joinFailed->joinGameFailureReason = joinGameFailureReason_invalidGame;
 			break;
diff --git a/src/net/socket_msg.h b/src/net/socket_msg.h
index 6d09b1aa..fd6199c2 100644
--- a/src/net/socket_msg.h
+++ b/src/net/socket_msg.h
@@ -117,6 +117,7 @@
 #define NTF_NET_JOIN_GAME_NAME_IN_USE	216
 #define NTF_NET_JOIN_GAME_BAD_NAME		217
 #define NTF_NET_JOIN_INVALID_SETTINGS	218
+#define NTF_NET_JOIN_IP_BLOCKED			219
 
 // Notifications - version
 #define NTF_NET_NEW_RELEASE_AVAILABLE	220