diff --git a/gtk/gtkscale.c b/gtk/gtkscale.c
index 4317523fb8..3c09cd3ae8 100644
--- a/gtk/gtkscale.c
+++ b/gtk/gtkscale.c
@@ -1471,7 +1471,7 @@ gtk_scale_add_mark (GtkScale        *scale,
   mark->position = position;
  
   priv->marks = g_slist_insert_sorted_with_data (priv->marks, mark,
-                                                 (GCompareFunc) compare_marks,
+                                                 (GCompareDataFunc) compare_marks,
                                                  GINT_TO_POINTER (
                                                    gtk_range_get_inverted (GTK_RANGE (scale)) 
                                                    ));
diff --git a/tests/testmenubars.c b/tests/testmenubars.c
index 416a939861..c65e82be26 100644
--- a/tests/testmenubars.c
+++ b/tests/testmenubars.c
@@ -21,7 +21,7 @@
 #include <gtk/gtk.h>
 
 static GtkWidget *
-create_menu (depth)
+create_menu (int depth, gboolean _unused)
 {
     GtkWidget *menu;
     GtkWidget *menuitem;
@@ -35,19 +35,19 @@ create_menu (depth)
     gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
     gtk_widget_show (menuitem);
     gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem),
-			       create_menu (depth - 1));
+			       create_menu (depth - 1, _unused));
 
     menuitem = gtk_menu_item_new_with_mnemonic ("Two");
     gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
     gtk_widget_show (menuitem);
     gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem),
-			       create_menu (depth - 1));
+			       create_menu (depth - 1, _unused));
 
     menuitem = gtk_menu_item_new_with_mnemonic ("Three");
     gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
     gtk_widget_show (menuitem);
     gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem),
-			       create_menu (depth - 1));
+			       create_menu (depth - 1, _unused));
 
     return menu;
 }