diff --git a/gtk/gtkbin.c b/gtk/gtkbin.c
index 812f2df6da..abe90e1173 100644
--- a/gtk/gtkbin.c
+++ b/gtk/gtkbin.c
@@ -182,7 +182,7 @@ static void
 gtk_bin_extended_layout_get_height_for_width (GtkExtendedLayout *layout,
                                               gint               width,
                                               gint              *minimum_height,
-                                              gint               natural_height)
+                                              gint              *natural_height)
 {
   GtkBin *bin = GTK_BIN (layout);