-#define GTK_ALIGNMENT(obj) (GTK_CHECK_CAST ((obj), GTK_TYPE_ALIGNMENT, GtkAlignment))
-#define GTK_ALIGNMENT_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_ALIGNMENT, GtkAlignmentClass))
-#define GTK_IS_ALIGNMENT(obj) (GTK_CHECK_TYPE ((obj), GTK_TYPE_ALIGNMENT))
-#define GTK_IS_ALIGNMENT_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_ALIGNMENT))
+#define GTK_ALIGNMENT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_ALIGNMENT, GtkAlignment))
+#define GTK_ALIGNMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_ALIGNMENT, GtkAlignmentClass))
+#define GTK_IS_ALIGNMENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_ALIGNMENT))
+#define GTK_IS_ALIGNMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_ALIGNMENT))
+#define GTK_ALIGNMENT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_ALIGNMENT, GtkAlignmentClass))