diff --git a/klippy/chelper/trapq.c b/klippy/chelper/trapq.c
index b9930e997..a21969414 100644
--- a/klippy/chelper/trapq.c
+++ b/klippy/chelper/trapq.c
@@ -49,6 +49,7 @@ trapq_alloc(void)
     list_init(&tq->moves);
     list_init(&tq->history);
     struct move *head_sentinel = move_alloc(), *tail_sentinel = move_alloc();
+    head_sentinel->print_time = -1.0;
     tail_sentinel->print_time = tail_sentinel->move_t = NEVER_TIME;
     list_add_head(&head_sentinel->node, &tq->moves);
     list_add_tail(&tail_sentinel->node, &tq->moves);