diff --git a/gtk/gtksingleselection.c b/gtk/gtksingleselection.c
index e072594d6a..91f3261d6a 100644
--- a/gtk/gtksingleselection.c
+++ b/gtk/gtksingleselection.c
@@ -625,7 +625,7 @@ gtk_single_selection_set_selected (GtkSingleSelection *self,
  *
  * If no item is selected, %NULL is returned.
  *
- * Returns: (transfer none): The selected item
+ * Returns: (transfer none) (type GObject) (nullable): The selected item
  */
 gpointer
 gtk_single_selection_get_selected_item (GtkSingleSelection *self)