From 1a64fde0af346938cd58c185c46dfa1d6c419d71 Mon Sep 17 00:00:00 2001
From: rwjuk <rwj@serenity.uk.net>
Date: Tue, 8 Aug 2017 01:34:09 +0100
Subject: [PATCH] Fix #6138: 'Too low' error when placing at lowest Z

---
 src/openrct2/windows/RideConstruction.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/openrct2/windows/RideConstruction.cpp b/src/openrct2/windows/RideConstruction.cpp
index 66797e808f..1230fa2fa8 100644
--- a/src/openrct2/windows/RideConstruction.cpp
+++ b/src/openrct2/windows/RideConstruction.cpp
@@ -3893,7 +3893,7 @@ void ride_construction_tooldown_construct(sint32 screenX, sint32 screenY)
         z -= bx;
 
         // FIX not sure exactly why it starts trial and error place from a lower Z, but it causes issues with disable clearance
-        if (!gCheatsDisableClearanceChecks) {
+        if (!gCheatsDisableClearanceChecks && z > 16) {
             z -= 16;
         }
     } else {