diff --git a/engine/src/core/com/jme3/scene/Mesh.java b/engine/src/core/com/jme3/scene/Mesh.java
index abfed0634..b894450dc 100644
--- a/engine/src/core/com/jme3/scene/Mesh.java
+++ b/engine/src/core/com/jme3/scene/Mesh.java
@@ -887,6 +887,15 @@ public class Mesh implements Savable, Cloneable {
         collisionTree = tree;
     }
 
+    /**
+     * Clears any previously generated collision data.  Use this if
+     * the mesh has changed in some way that invalidates any previously
+     * generated BIHTree.
+     */
+    public void clearCollisionData() {
+        collisionTree = null;
+    }
+
     /**
      * Handles collision detection, internal use only.
      * User code should only use collideWith() on scene