diff --git a/src/maomao.c b/src/maomao.c
index bcad916..5328260 100644
--- a/src/maomao.c
+++ b/src/maomao.c
@@ -1580,7 +1580,7 @@ void swallow(Client *c, Client *w) {
 	if (!c->foreign_toplevel && c->mon)
 		add_foreign_toplevel(c);
 
-	if (c->isminied) {
+	if (c->isminied && c->foreign_toplevel) {
 		wlr_foreign_toplevel_handle_v1_set_activated(c->foreign_toplevel,
 													 false);
 		wlr_foreign_toplevel_handle_v1_set_minimized(c->foreign_toplevel, true);