diff --git a/RP_L4/RPL4FE.cpp b/RP_L4/RPL4FE.cpp
index 8628349..f96ba3c 100644
--- a/RP_L4/RPL4FE.cpp
+++ b/RP_L4/RPL4FE.cpp
@@ -2051,6 +2051,12 @@ const char *
 	return gLastPilotNamesCsv;
 }
 
+const char *
+	RPL4FrontEnd_Callsign()
+{
+	return gLastPilotName;
+}
+
 int
 	RPL4FrontEnd_LastLaunchMode()
 {
diff --git a/RP_L4/RPL4FE.h b/RP_L4/RPL4FE.h
index 1ad3643..11c50c1 100644
--- a/RP_L4/RPL4FE.h
+++ b/RP_L4/RPL4FE.h
@@ -34,6 +34,15 @@ int
 const char *
 	RPL4FrontEnd_LastPilotNames();
 
+//
+// The callsign the player typed on the setup screen (persisted in
+// pilot.cfg). The lobby publishes this as the member name: what somebody
+// writes in the box is what the room and the race should call them.
+// Empty, or still the untouched default, when they have never set one.
+//
+const char *
+	RPL4FrontEnd_Callsign();
+
 // How the last Run() ended: a plain race, hosting a network race (the
 // console marshals the other pods), or entering one as a member pod
 // (the lobby owner's console marshals us; no local egg, no console).
diff --git a/RP_L4/RPL4LOBBY.cpp b/RP_L4/RPL4LOBBY.cpp
index 549065d..48d5729 100644
--- a/RP_L4/RPL4LOBBY.cpp
+++ b/RP_L4/RPL4LOBBY.cpp
@@ -165,8 +165,27 @@ namespace
 		sprintf(value, "%d", SteamNetTransport_GetFakeGamePort());
 		SteamMatchmaking()->SetLobbyMemberData(gLobby, "gp", value);
 
+		//
+		// The name in the room is the CALLSIGN from the setup screen, not
+		// the Steam persona. Publishing the persona meant the box a player
+		// types their name into had no effect on anything they could see -
+		// and because it never came from a file, wiping the install
+		// directory did not shake it loose either.
+		//
+		// The persona is kept as the fallback for somebody who has never
+		// set a callsign: better to appear as yourself than as "Pilot".
+		//
 		char name[32];
-		SanitizeName(SteamFriends()->GetPersonaName(), name, sizeof(name));
+		const char *callsign = RPL4FrontEnd_Callsign();
+		if (callsign != NULL && callsign[0] != '\0' &&
+			strcmp(callsign, "Pilot") != 0)
+		{
+			SanitizeName(callsign, name, sizeof(name));
+		}
+		else
+		{
+			SanitizeName(SteamFriends()->GetPersonaName(), name, sizeof(name));
+		}
 		SteamMatchmaking()->SetLobbyMemberData(gLobby, "nm", name);
 
 		char vehicle[24], color[16], badge[24];