diff --git a/src/main/java/model/ModelElement.java b/src/main/java/model/ModelElement.java
index 5c0f3ba3893db90f38b078fab55b193ee8d86b6c..632bfada7087e8c0dcc30d627def4945d8295907 100644
--- a/src/main/java/model/ModelElement.java
+++ b/src/main/java/model/ModelElement.java
@@ -1,5 +1,5 @@
 package model;
 
 public enum ModelElement {
-  FIREFIGHTER, FIRE, CLOUD
+  FIREFIGHTER, FIRE, CLOUD, MOUNTAIN
 }