diff --git a/src/genworld_gui.cpp b/src/genworld_gui.cpp
--- a/src/genworld_gui.cpp
+++ b/src/genworld_gui.cpp
@@ -488,6 +488,9 @@ struct GenerateLandscapeWindow : public 
 			this->SetWidgetLoweredState(GLAND_WATER_NE, HasBit(_settings_newgame.game_creation.water_borders, BORDER_NE));
 			this->SetWidgetLoweredState(GLAND_WATER_SE, HasBit(_settings_newgame.game_creation.water_borders, BORDER_SE));
 			this->SetWidgetLoweredState(GLAND_WATER_SW, HasBit(_settings_newgame.game_creation.water_borders, BORDER_SW));
+
+			this->SetWidgetsDisabledState(_settings_newgame.game_creation.land_generator == 0 && (_settings_newgame.game_creation.landscape == LT_ARCTIC || _settings_newgame.game_creation.landscape == LT_TROPIC),
+					GLAND_TERRAIN_PULLDOWN, GLAND_WATER_PULLDOWN, WIDGET_LIST_END);
 		}
 		/* Disable snowline if not hilly */
 		this->SetWidgetDisabledState(GLAND_SNOW_LEVEL_TEXT, _settings_newgame.game_creation.landscape != LT_ARCTIC);