diff --git a/src/main/java/model/Mountain.java b/src/main/java/model/Mountain.java
index 94895b53d2d28402f2f4653be688bcf16f6213f9..83f5eccb8b47fc7fa70790d3d700a13edeafcd1c 100644
--- a/src/main/java/model/Mountain.java
+++ b/src/main/java/model/Mountain.java
@@ -3,7 +3,7 @@ package model;
 import util.Position;
 
 public class Mountain {
-    private Position position;
+    private final Position position;
 
     public Mountain(Position position) {
         this.position = position;