diff --git a/src/engine/gameManager/BuildingManager.java b/src/engine/gameManager/BuildingManager.java
index 9efaba7b..ef477355 100644
--- a/src/engine/gameManager/BuildingManager.java
+++ b/src/engine/gameManager/BuildingManager.java
@@ -28,6 +28,8 @@ import engine.objects.*;
 import engine.server.MBServerStatics;
 import org.pmw.tinylog.Logger;
 
+import java.awt.*;
+import java.awt.geom.AffineTransform;
 import java.awt.geom.Area;
 import java.awt.geom.Path2D;
 import java.time.LocalDateTime;
@@ -1011,7 +1013,9 @@ public enum BuildingManager {
             // subtract stencil from zone navmesh
 
             Area stencilArea = new Area(stencilPath);
-            building.parentZone.navMesh.subtract(stencilArea);
+            AffineTransform at = new AffineTransform();
+            at.createTransformedShape(new Polygon());
+            building.parentZone.navMesh.subtract(stencilArea.createTransformedArea(at));
         }
 
         //add in all the regions to the navMesh