diff --git a/block/stream.c b/block/stream.c
index bfaebb861a0a..1a906fd86062 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -42,12 +42,10 @@ static int coroutine_fn stream_populate(BlockBackend *blk,
                                         int64_t offset, uint64_t bytes,
                                         void *buf)
 {
-    QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
-
     assert(bytes < SIZE_MAX);
 
     /* Copy-on-read the unallocated clusters */
-    return blk_co_preadv(blk, offset, qiov.size, &qiov, BDRV_REQ_COPY_ON_READ);
+    return blk_co_pread(blk, offset, bytes, buf, BDRV_REQ_COPY_ON_READ);
 }
 
 static void stream_abort(Job *job)