diff --git a/src/gcal-month-view.c b/src/gcal-month-view.c
index 515b2b98..8b660026 100644
--- a/src/gcal-month-view.c
+++ b/src/gcal-month-view.c
@@ -1638,8 +1638,11 @@ gcal_month_view_add (GtkContainer *container,
       l = g_hash_table_lookup (priv->single_day_children, GINT_TO_POINTER (date->day));
       l = g_list_insert_sorted (l, widget, (GCompareFunc) gcal_event_widget_compare_by_start_date);
 
-      if (g_list_length (l) == 1)
-        g_hash_table_insert (priv->single_day_children, GINT_TO_POINTER (date->day), l);
+      if (g_list_length (l) != 1)
+        {
+          g_hash_table_steal (priv->single_day_children, GINT_TO_POINTER (date->day));
+        }
+      g_hash_table_insert (priv->single_day_children, GINT_TO_POINTER (date->day), l);
 
       g_free (date);
     }