diff --git a/pyinfra/storage/storage_info.py b/pyinfra/storage/storage_info.py
index 362872f..65b1084 100644
--- a/pyinfra/storage/storage_info.py
+++ b/pyinfra/storage/storage_info.py
@@ -126,7 +126,7 @@ def get_storage_info_from_endpoint(public_key: str, endpoint: str, x_tenant_id:
             access_key=maybe_s3["key"],
             secret_key=secret,
             region=maybe_s3["region"],
-            bucket_name=maybe_s3,
+            bucket_name=maybe_s3["bucketName"],
         )
     else:
         raise UnknownStorageBackend()