diff --git a/cmd-lock-server.c b/cmd-lock-server.c
index 54f2efd2..55c19e38 100644
--- a/cmd-lock-server.c
+++ b/cmd-lock-server.c
@@ -45,6 +45,7 @@ int
 cmd_lock_server_exec(unused struct cmd *self, unused struct cmd_ctx *ctx)
 {
 	server_lock();
+	recalculate_sizes();
 
 	return (0);
 }
diff --git a/resize.c b/resize.c
index d549ea5b..5635f9d4 100644
--- a/resize.c
+++ b/resize.c
@@ -60,7 +60,7 @@ recalculate_sizes(void)
 		ssx = ssy = UINT_MAX;
 		for (j = 0; j < ARRAY_LENGTH(&clients); j++) {
 			c = ARRAY_ITEM(&clients, j);
-			if (c == NULL)
+			if (c == NULL || c->flags & CLIENT_SUSPENDED)
 				continue;
 			if (c->session == s) {
 				if (c->tty.sx < ssx)
diff --git a/server-msg.c b/server-msg.c
index b7b45c6c..ec085610 100644
--- a/server-msg.c
+++ b/server-msg.c
@@ -104,6 +104,7 @@ server_msg_dispatch(struct client *c)
 			c->flags &= ~CLIENT_SUSPENDED;
 			tty_start_tty(&c->tty);
 			server_redraw_client(c);
+			recalculate_sizes();
 			server_activity = time(NULL);
 			break;
 		case MSG_ENVIRON:
diff --git a/server.c b/server.c
index 6dac5f5b..f7136784 100644
--- a/server.c
+++ b/server.c
@@ -1194,8 +1194,10 @@ server_second_timers(void)
 	t = time(NULL);
 
 	xtimeout = options_get_number(&global_s_options, "lock-after-time");
-	if (xtimeout > 0 && t > server_activity + xtimeout)
+	if (xtimeout > 0 && t > server_activity + xtimeout) {
 		server_lock();
+		recalculate_sizes();
+	}
 
 	for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
 		w = ARRAY_ITEM(&windows, i);