diff --git a/ChangeLog b/ChangeLog
index ddacfd725f..dec743a18d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-05-20  Gian Mario Tagliaretti  <gianmt@gnome.org>
+
+	* gtk/gtkdnd.c: (gtk_drag_set_icon_pixmap): Fix the docs, the mask param
+	can accept NULL for none. Fixes bug #533920.
+
 2008-05-20  Björn Lindqvist  <bjourne@gmail.com>
 
 	* gtk/gtkspinbutton.c: (gtk_spin_button_snap,
diff --git a/gtk/gtkdnd.c b/gtk/gtkdnd.c
index 87f4db43f1..1b1a9aa70d 100644
--- a/gtk/gtkdnd.c
+++ b/gtk/gtkdnd.c
@@ -3095,7 +3095,7 @@ gtk_drag_set_icon_stock  (GdkDragContext *context,
  *            with a  context for the source side of a drag)
  * @colormap: the colormap of the icon 
  * @pixmap: the image data for the icon 
- * @mask: the transparency mask for the icon
+ * @mask: the transparency mask for the icon or %NULL for none.
  * @hot_x: the X offset within @pixmap of the hotspot.
  * @hot_y: the Y offset within @pixmap of the hotspot.
  *