diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 7f4e7eca0e28a4da7307106b7dfaa7ade2259101..3557c178f1e3a41928b76523aa9fadbfef383ef2 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -430,7 +430,7 @@ void virtqueue_map_sg(struct iovec *sg, hwaddr *addr,
     unsigned int i;
     hwaddr len;
 
-    if (num_sg >= VIRTQUEUE_MAX_SIZE) {
+    if (num_sg > VIRTQUEUE_MAX_SIZE) {
         error_report("virtio: map attempt out of bounds: %zd > %d",
                      num_sg, VIRTQUEUE_MAX_SIZE);
         exit(1);