diff --git a/module/documents/actor.mjs b/module/documents/actor.mjs
index 4f40017..55fc690 100644
--- a/module/documents/actor.mjs
+++ b/module/documents/actor.mjs
@@ -27,16 +27,19 @@ export class VermineActor extends Actor {
 
   /** @override */
   prepareEmbeddedDocuments() {
-    // Prevent recursive effect application
-    // Foundry V11+ can sometimes call this multiple times in a preparation cycle
-    if (this._preparingEffects) return;
-    this._preparingEffects = true;
+    // Check if effects are already being applied in this preparation cycle
+    // In Foundry V11+, the parent prepareEmbeddedDocuments() calls applyActiveEffects()
+    // If this is called multiple times in the same cycle, we get the "phase already completed" error
+    const phase = this.effects?.applicationPhase;
     
-    try {
-      super.prepareEmbeddedDocuments();
-    } finally {
-      delete this._preparingEffects;
+    // If we're already in the middle of applying effects (initial or final phase),
+    // don't call super as it would try to apply effects again
+    if (phase === "initial" || phase === "final") {
+      return;
     }
+    
+    // If effects haven't been applied yet, proceed normally
+    super.prepareEmbeddedDocuments();
   }
 
   /**