#define IS_FLOATING(c) (c->state == STATE_FLOATING)
#define IS_FULLSCREEN(c) (c->state == STATE_FULLSCREEN)
#define IS_RECEPTACLE(n) (is_leaf(n) && n->client == NULL)
-#define IS_MONOCLE(d) (d->layout == LAYOUT_MONOCLE || (single_monocle && tiled_count(d->root) <= 1))
+#define IS_MONOCLE(d) (d->layout == LAYOUT_MONOCLE || (single_monocle && tiled_count(d->root, true) <= 1))
#define BOOL_STR(A) ((A) ? "true" : "false")
#define ON_OFF_STR(A) ((A) ? "on" : "off")