--- dwm.c
+++ dwm.c
@@ -1461,7 +1485,7 @@ sendmon(Client *c, Monitor *m)
 	detachstack(c);
 	c->mon = m;
 	c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
-	attach(c);
+	attachaside(c);
 	attachstack(c);
 	focus(NULL);
 	arrange(NULL);
@@ -1914,7 +1938,7 @@ updategeom(void)
 					m->clients = c->next;
 					detachstack(c);
 					c->mon = mons;
-					attach(c);
+					attachaside(c);
 					attachstack(c);
 				}
 				if (m == selmon)