1 files changed, 1 insertions, 1 deletions
diff --git a/plugins/repository-s3/src/test/java/org/elasticsearch/cloud/aws/blobstore/S3BlobStoreContainerTests.java b/plugins/repository-s3/src/test/java/org/elasticsearch/cloud/aws/blobstore/S3BlobStoreContainerTests.java
index 98dd43b6f4..187ce9b23b 100644
--- a/plugins/repository-s3/src/test/java/org/elasticsearch/cloud/aws/blobstore/S3BlobStoreContainerTests.java
+++ b/plugins/repository-s3/src/test/java/org/elasticsearch/cloud/aws/blobstore/S3BlobStoreContainerTests.java
@@ -31,7 +31,7 @@ import java.util.Locale;
 public class S3BlobStoreContainerTests extends ESBlobStoreContainerTestCase {
     protected BlobStore newBlobStore() throws IOException {
         MockAmazonS3 client = new MockAmazonS3();
-        String bucket = randomAsciiOfLength(randomIntBetween(1, 10)).toLowerCase(Locale.ROOT);
+        String bucket = randomAlphaOfLength(randomIntBetween(1, 10)).toLowerCase(Locale.ROOT);
 
         return new S3BlobStore(Settings.EMPTY, client, bucket, false,
             new ByteSizeValue(10, ByteSizeUnit.MB), 5, "public-read-write", "standard");