diff --git a/src/terraform_gui.cpp b/src/terraform_gui.cpp
--- a/src/terraform_gui.cpp
+++ b/src/terraform_gui.cpp
@@ -508,8 +508,7 @@ static void ResetLandscapeConfirmationCa
 		_generating_world = false;
 
 		/* Delete all station signs */
-		BaseStation *st;
-		FOR_ALL_BASE_STATIONS(st) {
+		for (BaseStation *st : BaseStation::Iterate()) {
 			/* There can be buoys, remove them */
 			if (IsBuoyTile(st->xy)) DoCommand(st->xy, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR);
 			if (!st->IsInUse()) delete st;