diff --git a/src/video/dedicated_v.cpp b/src/video/dedicated_v.cpp
--- a/src/video/dedicated_v.cpp
+++ b/src/video/dedicated_v.cpp
@@ -204,8 +204,8 @@ void VideoDriver_Dedicated::MainLoop()
 	_network_dedicated = true;
 	_current_company = _local_company = COMPANY_SPECTATOR;
 
-	/* If SwitchMode is SM_LOAD_GAME, it means that the user used the '-g' options */
-	if (_switch_mode != SM_LOAD_GAME) {
+	/* If SwitchMode is SM_LOAD_GAME / SM_START_HEIGHTMAP, it means that the user used the '-g' options */
+	if (_switch_mode != SM_LOAD_GAME && _switch_mode != SM_START_HEIGHTMAP) {
 		StartNewGameWithoutGUI(GENERATE_NEW_SEED);
 	}