--- a/client.c	Tue Aug 08 12:58:05 2006 +0200
+++ b/client.c	Tue Aug 08 17:08:45 2006 +0200
@@ -58,6 +58,8 @@
 	drawtitle(c);
 	XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 	XSync(dpy, False);
+	XChangeProperty(dpy, root, netatom[NetActiveWindow], XA_WINDOW, 32,
+			PropModeReplace, (unsigned char *)&c->win, 1);
 	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 }
 
@@ -459,6 +461,9 @@
 	arrange(NULL);
 	if(sel)
 		focus(sel);
+	else
+		XChangeProperty(dpy, root, netatom[NetActiveWindow], XA_WINDOW, 32,
+				PropModeReplace, (unsigned char *)NULL, 1);
 }
 
 void