diff --git a/block.c b/block.c
index 4e28c55..309aa85 100644
--- a/block.c
+++ b/block.c
@@ -159,6 +159,10 @@ void bdrv_io_limits_enable(BlockDriverState *bs)
      bs->slice_start = qemu_get_clock_ns(vm_clock);
      bs->slice_end   = bs->slice_start + bs->slice_time;
      memset(&bs->io_base, 0, sizeof(bs->io_base));
+    bs->io_base.bytes[0] = bs->nr_bytes[0];
+    bs->io_base.bytes[1] = bs->nr_bytes[1];
+    bs->io_base.ios[0] = bs->nr_ops[0];
+    bs->io_base.ios[1] = bs->nr_ops[1];
      bs->io_limits_enabled = true;
  }