diff --git a/aleksis/apps/alsijil/frontend/components/coursebook/personal_notes/ExtraMarkNoteCheckbox.vue b/aleksis/apps/alsijil/frontend/components/coursebook/personal_notes/ExtraMarkNoteCheckbox.vue
index b9280724b30028ee235a202d4cfc7fad8b1ac1fe..546712f1560a13a423e99e95038e7284c5b27724 100644
--- a/aleksis/apps/alsijil/frontend/components/coursebook/personal_notes/ExtraMarkNoteCheckbox.vue
+++ b/aleksis/apps/alsijil/frontend/components/coursebook/personal_notes/ExtraMarkNoteCheckbox.vue
@@ -70,7 +70,7 @@ export default {
                 (part) => part.id === this.participation.id,
               );
               const index = participationStatus.notesWithExtraMark.findIndex(
-                (n) => n.id === this.participation.id,
+                (n) => n.id === this.personalNote.id,
               );
               participationStatus.notesWithExtraMark.splice(index, 1);