diff --git a/src/venus/vkr_ring.c b/src/venus/vkr_ring.c
index 4769797..5fea070 100644
--- a/src/venus/vkr_ring.c
+++ b/src/venus/vkr_ring.c
@@ -351,7 +351,7 @@ bool
 vkr_ring_stop(struct vkr_ring *ring)
 {
    mtx_lock(&ring->mutex);
-   if (ring->thread == thrd_current()) {
+   if (thrd_equal(ring->thread, thrd_current())) {
       mtx_unlock(&ring->mutex);
       return false;
    }