diff --git a/dialog.js b/dialog.js
index f4246dc..7ce2423 100644
--- a/dialog.js
+++ b/dialog.js
@@ -59,7 +59,7 @@ export class Dialog extends HTMLElement {
     this.footerEl.setAttribute('part', 'footer')
   }
 
-  open(anchor = undefined) {
+  open() {
     this.dialogEl.showModal()
     this.dialogEl.classList.add('opened')
   }