From 60345d2e18eee91ba8cf5a38c2d514855504df72 Mon Sep 17 00:00:00 2001
From: HackaLittleBit <hackalittlebit@gmail.com>
Date: Wed, 7 Jun 2017 19:56:20 +0100
Subject: [PATCH] Fix cost of building tunnels.

---
 src/tunnelbridge_cmd.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/tunnelbridge_cmd.cpp b/src/tunnelbridge_cmd.cpp
index 15e02d17d3..efcdfd3848 100644
--- a/src/tunnelbridge_cmd.cpp
+++ b/src/tunnelbridge_cmd.cpp
@@ -807,8 +807,8 @@ CommandCost CmdBuildTunnel(TileIndex start_tile, DoCommandFlag flags, uint32 p1,
 	}
 	/* The cost of the digging. */
 	CommandCost cost(EXPENSES_CONSTRUCTION);
-	for (int i = tiles; i > 0; i--) {
-		if (tiles == tiles_bump) {
+	for (int i = 1; i <= tiles; i++) {
+		if (i == tiles_bump) {
 			tiles_coef++;
 			tiles_bump *= 2;
 		}