diff --git a/src/xselect.c b/src/xselect.c

index b3017c3..4ba4984 100644

--- a/src/xselect.c

+++ b/src/xselect.c

@@ -2659,6 +2659,8 @@ x_send_client_event (Lisp_Object display, Lisp_Object dest, Lisp_Object from,

   block_input ();

+  event.xclient.send_event = True;

+  event.xclient.serial = 0;

   event.xclient.message_type = message_type;

   event.xclient.display = dpyinfo->display;

@@ -2667,18 +2669,19 @@ x_send_client_event (Lisp_Object display, Lisp_Object dest, Lisp_Object from,

   event.xclient.window = to_root ? FRAME_OUTER_WINDOW (f) : wdest;

-  memset (event.xclient.data.b, 0, sizeof (event.xclient.data.b));

+  memset (event.xclient.data.l, 0, sizeof (event.xclient.data.l));

   x_fill_property_data (dpyinfo->display, values, event.xclient.data.b,

                         event.xclient.format);

   /* If event mask is 0 the event is sent to the client that created

      the destination window.  But if we are sending to the root window,

-     there is no such client.  Then we set the event mask to 0xffff.  The

+     there is no such client.  Then we set the event mask to 0xffffff.  The

      event then goes to clients selecting for events on the root window.  */

   x_catch_errors (dpyinfo->display);

   {

     int propagate = to_root ? False : True;

-    unsigned mask = to_root ? 0xffff : 0;

+    long mask = to_root ? 0xffffff : 0;

+

     XSendEvent (dpyinfo->display, wdest, propagate, mask, &event);

     XFlush (dpyinfo->display);

   }