diff --git a/google-cloud-storage/src/main/java/com/google/cloud/storage/transfermanager/TransferManagerUtils.java b/google-cloud-storage/src/main/java/com/google/cloud/storage/transfermanager/TransferManagerUtils.java
index 607dd3148b..d70fc99b29 100644
--- a/google-cloud-storage/src/main/java/com/google/cloud/storage/transfermanager/TransferManagerUtils.java
+++ b/google-cloud-storage/src/main/java/com/google/cloud/storage/transfermanager/TransferManagerUtils.java
@@ -28,9 +28,9 @@ private TransferManagerUtils() {}
 
   static String createBlobName(ParallelUploadConfig config, Path file) {
     if (config.getPrefix().isEmpty()) {
-      return file.toString();
+      return file.getFileName().toString();
     } else {
-      return config.getPrefix().concat(file.toString());
+      return config.getPrefix().concat(file.getFileName().toString());
     }
   }