diff --git a/gtk/gtkvolumebutton.h b/gtk/gtkvolumebutton.h
index 6084e983b2..1fd9bd9074 100644
--- a/gtk/gtkvolumebutton.h
+++ b/gtk/gtkvolumebutton.h
@@ -40,7 +40,7 @@ G_BEGIN_DECLS
 
 #define GTK_TYPE_VOLUME_BUTTON                 (gtk_volume_button_get_type ())
 #define GTK_VOLUME_BUTTON(obj)                 (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_VOLUME_BUTTON, GtkVolumeButton))
-#define GTK_VOLUME_BUTTON_CLASS(klass)         (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_VOLUME_BUTTON, GtkVolumeeButtonClass))
+#define GTK_VOLUME_BUTTON_CLASS(klass)         (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_VOLUME_BUTTON, GtkVolumeButtonClass))
 #define GTK_IS_VOLUME_BUTTON(obj)              (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_VOLUME_BUTTON))
 #define GTK_IS_VOLUME_BUTTON_CLASS(klass)      (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_VOLUME_BUTTON))
 #define GTK_VOLUME_BUTTON_GET_CLASS(obj)       (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_VOLUME_BUTTON, GtkVolumeButtonClass))