diff --git a/gdk/x11/gdkcursor-x11.c b/gdk/x11/gdkcursor-x11.c
index 03d49baa96..3cce62fed4 100644
--- a/gdk/x11/gdkcursor-x11.c
+++ b/gdk/x11/gdkcursor-x11.c
@@ -624,6 +624,7 @@ static const struct {
   { "copy",         "dnd-copy" },
   { "move",         "dnd-move" },
   { "no-drop",      "dnd-none" },
+  { "dnd-ask",      "dnd-copy" }, /* not CSS, but we want to guarantee it anyway */
   { "not-allowed",  "crossed_circle" },
   { "grab",         "hand2" },
   { "grabbing",     "hand2" },