diff --git a/src/gui/event-editor/gcal-summary-section.c b/src/gui/event-editor/gcal-summary-section.c
index f2427c52..500e8e88 100644
--- a/src/gui/event-editor/gcal-summary-section.c
+++ b/src/gui/event-editor/gcal-summary-section.c
@@ -34,16 +34,10 @@ struct _GcalSummarySection
 
   AdwEntryRow        *summary_entry;
   AdwEntryRow        *location_entry;
-
-  GcalEvent          *event;
-  GcalEvent          *cloned_event;
 };
 
 
-static void          gcal_event_editor_section_iface_init        (GcalEventEditorSectionInterface *iface);
-
-G_DEFINE_TYPE_WITH_CODE (GcalSummarySection, gcal_summary_section, ADW_TYPE_PREFERENCES_GROUP,
-                         G_IMPLEMENT_INTERFACE (GCAL_TYPE_EVENT_EDITOR_SECTION, gcal_event_editor_section_iface_init))
+G_DEFINE_FINAL_TYPE (GcalSummarySection, gcal_summary_section, ADW_TYPE_PREFERENCES_GROUP)
 
 /*
  * Callbacks
@@ -87,85 +81,6 @@ on_location_entry_changed_cb (GcalSummarySection *self)
 }
 
 
-/*
- * GcalEventEditorSection interface
- */
-
-static void
-gcal_reminders_section_set_event (GcalEventEditorSection *section,
-                                  GcalEvent              *event,
-                                  GcalEventEditorFlags    flags)
-{
-  GcalSummarySection *self;
-
-  GCAL_ENTRY;
-
-  self = GCAL_SUMMARY_SECTION (section);
-
-  g_clear_pointer (&self->cloned_event, g_object_unref);
-
-  g_set_object (&self->event, event);
-
-  if (!event)
-    GCAL_RETURN ();
-
-  g_set_object (&self->cloned_event, g_object_ref (gcal_event_new_from_event (self->event)));
-
-  g_signal_handlers_block_by_func (self->summary_entry, on_summary_entry_text_changed_cb, self);
-  g_signal_handlers_block_by_func (self->location_entry, on_location_entry_changed_cb, self);
-
-  gtk_editable_set_text (GTK_EDITABLE (self->summary_entry), gcal_event_get_summary (event));
-  gtk_editable_set_text (GTK_EDITABLE (self->location_entry), gcal_event_get_location (event));
-
-  g_signal_handlers_unblock_by_func (self->summary_entry, on_summary_entry_text_changed_cb, self);
-  g_signal_handlers_unblock_by_func (self->location_entry, on_location_entry_changed_cb, self);
-
-  gtk_widget_remove_css_class (GTK_WIDGET (self->summary_entry), "error");
-
-  GCAL_EXIT;
-}
-
-static void
-gcal_reminders_section_apply (GcalEventEditorSection *section)
-{
-  GcalSummarySection *self;
-
-  GCAL_ENTRY;
-
-  self = GCAL_SUMMARY_SECTION (section);
-
-  gcal_event_set_summary (self->event, gtk_editable_get_text (GTK_EDITABLE (self->summary_entry)));
-  gcal_event_set_location (self->event, gtk_editable_get_text (GTK_EDITABLE (self->location_entry)));
-
-  GCAL_EXIT;
-}
-
-static gboolean
-gcal_reminders_section_changed (GcalEventEditorSection *section)
-{
-  GcalSummarySection *self;
-  const gchar *event_location;
-  const gchar *event_summary;
-
-  GCAL_ENTRY;
-
-  self = GCAL_SUMMARY_SECTION (section);
-  event_summary = gcal_event_get_summary (self->cloned_event);
-  event_location = gcal_event_get_location (self->cloned_event);
-
-  GCAL_RETURN (g_strcmp0 (event_summary, gtk_editable_get_text (GTK_EDITABLE (self->summary_entry))) != 0 ||
-               g_strcmp0 (event_location, gtk_editable_get_text (GTK_EDITABLE (self->location_entry))) != 0);
-}
-
-static void
-gcal_event_editor_section_iface_init (GcalEventEditorSectionInterface *iface)
-{
-  iface->set_event = gcal_reminders_section_set_event;
-  iface->apply = gcal_reminders_section_apply;
-  iface->changed = gcal_reminders_section_changed;
-}
-
-
 /*
  * GtkWidget overrides
  */
@@ -229,26 +144,11 @@ gcal_summary_section_unmap (GtkWidget *widget)
  * GObject overrides
  */
 
-static void
-gcal_summary_section_finalize (GObject *object)
-{
-  GcalSummarySection *self = (GcalSummarySection *)object;
-
-  g_clear_object (&self->event);
-
-  g_clear_pointer (&self->cloned_event, g_object_unref);
-
-  G_OBJECT_CLASS (gcal_summary_section_parent_class)->finalize (object);
-}
-
 static void
 gcal_summary_section_class_init (GcalSummarySectionClass *klass)
 {
-  GObjectClass *object_class = G_OBJECT_CLASS (klass);
   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 
-  object_class->finalize = gcal_summary_section_finalize;
-
   widget_class->grab_focus = gcal_summary_section_grab_focus;
   widget_class->map = gcal_summary_section_map;
   widget_class->unmap = gcal_summary_section_unmap;