diff --git a/src/main.ts b/src/main.ts
index 0fda519b..11b9caca 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -82,7 +82,7 @@ export default class StatBlockPlugin extends Plugin {
     data: Map<string, Monster>;
     _bestiary: Map<string, Monster>;
     get bestiary() {
-        return this._bestiary;
+        return new Map(this._bestiary);
     }
     watcher = new Watcher(this);
     private _sorted: Monster[] = [];