diff --git a/src/gui/views/gcal-month-view.c b/src/gui/views/gcal-month-view.c
index f7bab11f..ca235a88 100644
--- a/src/gui/views/gcal-month-view.c
+++ b/src/gui/views/gcal-month-view.c
@@ -833,13 +833,6 @@ gcal_month_view_add_event (GcalTimelineSubscriber *subscriber,
   GCAL_EXIT;
 }
 
-static void
-gcal_month_view_update_event (GcalTimelineSubscriber *subscriber,
-                              GcalEvent              *event)
-{
-  /* TODO */
-}
-
 static void
 gcal_month_view_remove_event (GcalTimelineSubscriber *subscriber,
                               GcalEvent              *event)
@@ -887,6 +880,20 @@ gcal_month_view_remove_event (GcalTimelineSubscriber *subscriber,
   GCAL_EXIT;
 }
 
+static void
+gcal_month_view_update_event (GcalTimelineSubscriber *subscriber,
+                              GcalEvent              *event)
+{
+  GCAL_ENTRY;
+
+  g_assert (event != NULL);
+
+  gcal_month_view_remove_event (subscriber, event);
+  gcal_month_view_add_event (subscriber, event);
+
+  GCAL_EXIT;
+}
+
 static void
 gcal_timeline_subscriber_interface_init (GcalTimelineSubscriberInterface *iface)
 {