diff --git a/src/mango.c b/src/mango.c
index 45d7288..93f5980 100644
--- a/src/mango.c
+++ b/src/mango.c
@@ -5958,6 +5958,10 @@ void updatemons(struct wl_listener *listener, void *data) {
 				c->mon = selmon;
 				reset_foreign_tolevel(c);
 			}
+			if(c->tags ==0 && !c->is_in_scratchpad) {
+				c->tags = selmon->tagset[selmon->seltags];
+				set_size_per(selmon,c);
+			}
 		}
 		focusclient(focustop(selmon), 1);
 		if (selmon->lock_surface) {