diff --git a/benches/common.rs b/benches/common.rs
index e90a8423..784ada5f 100644
--- a/benches/common.rs
+++ b/benches/common.rs
@@ -381,6 +381,7 @@ impl BenchDatabase for HeedBenchDatabase {
         let file = env
             .copy_to_file(path.join("data2.mdb"), CompactionOption::Enabled)
             .unwrap();
+        file.sync_all().unwrap();
         drop(file);
 
         // We close the env