diff -r bb00510a176a dwm.c
--- a/dwm.c	Wed Jul 01 19:15:20 2009 +0100
+++ b/dwm.c	Sat Jul 04 00:54:19 2009 +0200
@@ -1530,6 +1530,10 @@
 
 	if(!selmon->sel || !(m = idxtomon(arg->ui)))
 		return;
+	if(selmon->sel->isfloating) {
+	  selmon->sel->x += m->mx - selmon->mx;
+	  selmon->sel->y += m->my - selmon->my;
+	}
 	sendmon(selmon->sel, m);
 }