diff --git a/src/table/settings.ini b/src/table/settings.ini
--- a/src/table/settings.ini
+++ b/src/table/settings.ini
@@ -3959,6 +3959,7 @@ length   = NETWORK_NAME_LENGTH
 flags    = SLF_NOT_IN_SAVE | SLF_NO_NETWORK_SYNC
 guiflags = SGF_NETWORK_ONLY
 def      = nullptr
+pre_cb   = NetworkValidateServerName
 post_cb  = [](auto) { UpdateClientConfigValues(); }
 cat      = SC_BASIC