diff --git a/server.c b/server.c
index 895d666..e47fee3 100644
--- a/server.c
+++ b/server.c
@@ -238,7 +238,8 @@ static void server_mainloop() {
 				case MSG_ATTACH:
 				case MSG_RESIZE:
 					c->state = STATE_ATTACHED;
-					ioctl(server.pty, TIOCSWINSZ, &c->input.pkt.u.ws);
+					if (!c->next) /* only update size if this is first connected client */
+						ioctl(server.pty, TIOCSWINSZ, &c->input.pkt.u.ws);
 				case MSG_REDRAW:
 					kill(-server.pid, SIGWINCH);
 					break;