diff --git a/validator/db/files-async.hpp b/validator/db/files-async.hpp
index 2da534bf2..bcb7fa8b7 100644
--- a/validator/db/files-async.hpp
+++ b/validator/db/files-async.hpp
@@ -82,10 +82,9 @@ class WriteFile : public td::actor::Actor {
       : tmp_dir_(tmp_dir), new_name_(new_name), promise_(std::move(promise)) {
     write_data_ = [data_ptr = std::make_shared<td::BufferSlice>(std::move(data))] (td::FileFd& fd) {
       auto data = std::move(*data_ptr);
-      td::uint64 offset = 0;
       while (data.size() > 0) {
-        TRY_RESULT(s, fd.pwrite(data.as_slice(), offset));
-        offset += s;
+        auto piece_size = std::min<size_t>(data.size(), 1 << 30);
+        TRY_RESULT(s, fd.write(data.as_slice().substr(0, piece_size)));
         data.confirm_read(s);
       }
       return td::Status::OK();