diff --git a/crates/iam/tests/minio_iam_migration_test.rs b/crates/iam/tests/minio_iam_migration_test.rs
index 265c3c20f..b83045be3 100644
--- a/crates/iam/tests/minio_iam_migration_test.rs
+++ b/crates/iam/tests/minio_iam_migration_test.rs
@@ -97,11 +97,7 @@ async fn minio_permanent_identities_survive_migration_and_repeated_iam_loads() {
         .init_bucket_metadata(false)
         .build()
         .await;
-    for disk_path in &env.disk_paths {
-        tokio::fs::create_dir_all(disk_path.join(LEGACY_META_BUCKET))
-            .await
-            .expect("legacy metadata volume must be created");
-    }
+    env.make_bucket(LEGACY_META_BUCKET, false).await;
 
     let regular_source = json!({
         "version": 1,