1 files changed, 1 insertions, 1 deletions
diff --git a/static/components/tab-group-element.ts b/static/components/tab-group-element.ts
index 5cfeab2d..e90997e9 100644
--- a/static/components/tab-group-element.ts
+++ b/static/components/tab-group-element.ts
@@ -174,7 +174,7 @@ class TabGroupElement extends ComponentVEvent {
     /* returns our rrule tab if we have one */
     has_rrule_tab(): Element | false {
         for (let child of this.children) {
-            if ((child.firstChild! as HTMLElement).tagName.toLowerCase() === 'vevent-edit-rrule') {
+            if (child.firstChild! instanceof EditRRule) {
                 return child;
             }
         }