diff --git a/elements/nuxeo-document-actions/nuxeo-document-form-button.js b/elements/nuxeo-document-actions/nuxeo-document-form-button.js
index 2f5e1743ce..6163dec416 100644
--- a/elements/nuxeo-document-actions/nuxeo-document-form-button.js
+++ b/elements/nuxeo-document-actions/nuxeo-document-form-button.js
@@ -142,6 +142,7 @@ Polymer({
 
   _openDialog() {
     this.dialog.open();
+    this.fire('dialog-opened');
   },
 
   _closeDialog() {