diff --git a/server/CVCMIServer.cpp b/server/CVCMIServer.cpp
index 95d78d942..088e222b8 100644
--- a/server/CVCMIServer.cpp
+++ b/server/CVCMIServer.cpp
@@ -837,15 +837,21 @@ void CVCMIServer::setPlayer(PlayerColor clickedColor)
 
 void CVCMIServer::setPlayerName(PlayerColor color, std::string name)
 {
-	PlayerSettings & player = si->playerInfos[color];
+	if(color == PlayerColor::CANNOT_DETERMINE)
+		return;
 
-	if(player.isControlledByHuman())
-	{
-		int nameID = *(player.connectedPlayerIDs.begin()); //if not AI - set appropiate ID
+	PlayerSettings & player = si->playerInfos.at(color);
 
-		playerNames[nameID].name = name;
-		setPlayerConnectedId(player, nameID);
-	}
+	if(!player.isControlledByHuman())
+		return;
+
+	if(!player.connectedPlayerIDs.size())
+		return;
+
+	int nameID = *(player.connectedPlayerIDs.begin()); //if not AI - set appropiate ID
+
+	playerNames[nameID].name = name;
+	setPlayerConnectedId(player, nameID);
 }
 
 void CVCMIServer::optionNextCastle(PlayerColor player, int dir)