diff --git a/src/openrct2-ui/windows/RideConstruction.cpp b/src/openrct2-ui/windows/RideConstruction.cpp
index 3d10c497cb..ed08306002 100644
--- a/src/openrct2-ui/windows/RideConstruction.cpp
+++ b/src/openrct2-ui/windows/RideConstruction.cpp
@@ -3561,7 +3561,8 @@ void ride_construction_toolupdate_construct(ScreenCoordsXY screenCoords)
 
     _previousTrackPiece = _currentTrackBegin;
     // search for appropriate z value for ghost, up to max ride height
-    int numAttempts = (z <= (8 * MAX_TRACK_HEIGHT) ? MAX_TRACK_HEIGHT - (z / 8) + 1 : 2);
+    const auto smallZ = z / COORDS_Z_STEP;
+    int numAttempts = (smallZ <= MAX_TRACK_HEIGHT ? (MAX_TRACK_HEIGHT - smallZ + 1) : 2);
 
     if (ride->type == RIDE_TYPE_MAZE)
     {
@@ -3789,7 +3790,8 @@ void ride_construction_tooldown_construct(ScreenCoordsXY screenCoords)
     }
 
     // search for z value to build at, up to max ride height
-    int numAttempts = (z <= (8 * MAX_TRACK_HEIGHT) ? MAX_TRACK_HEIGHT - (z / 8) + 1 : 2);
+    const auto smallZ = z / COORDS_Z_STEP;
+    int numAttempts = (smallZ <= MAX_TRACK_HEIGHT ? (MAX_TRACK_HEIGHT - smallZ + 1) : 2);
 
     if (ride->type == RIDE_TYPE_MAZE)
     {