diff --git a/src/lang/english_US.txt b/src/lang/english_US.txt
--- a/src/lang/english_US.txt
+++ b/src/lang/english_US.txt
@@ -2204,6 +2204,7 @@ STR_NETWORK_ERROR_CLIENT_START          
 STR_NETWORK_ERROR_TIMEOUT                                       :{WHITE}Connection #{NUM} timed out
 STR_NETWORK_ERROR_SERVER_ERROR                                  :{WHITE}A protocol error was detected and the connection was closed
 STR_NETWORK_ERROR_BAD_PLAYER_NAME                               :{WHITE}Your player name has not been set. The name can be set at the top of the Multiplayer window
+STR_NETWORK_ERROR_BAD_SERVER_NAME                               :{WHITE}Your server name has not been set. The name can be set at the top of the Multiplayer window
 STR_NETWORK_ERROR_WRONG_REVISION                                :{WHITE}The revision of this client does not match the server's revision
 STR_NETWORK_ERROR_WRONG_PASSWORD                                :{WHITE}Wrong password
 STR_NETWORK_ERROR_SERVER_FULL                                   :{WHITE}The server is full