diff --git a/dwl.c b/dwl.c
index 5baa044..bf3e58c 100644
--- a/dwl.c
+++ b/dwl.c
@@ -1242,7 +1242,7 @@ void
 destroydecoration(struct wl_listener *listener, void *data)
 {
 	Client *c = wl_container_of(listener, c, destroy_decoration);
-	c->decoration == NULL;
+	c->decoration = NULL;
 
 	wl_list_remove(&c->destroy_decoration.link);
 	wl_list_remove(&c->set_decoration_mode.link);