diff --git a/Scripts/NodeGraph.cs b/Scripts/NodeGraph.cs
index 38d0364..6a0cead 100644
--- a/Scripts/NodeGraph.cs
+++ b/Scripts/NodeGraph.cs
@@ -77,7 +77,7 @@ namespace XNode {
             return graph;
         }
 
-        private void OnDestroy() {
+        protected virtual void OnDestroy() {
             // Remove all nodes prior to graph destruction
             Clear();
         }