diff --git a/lib/galaxy_test/api/test_tools_upload.py b/lib/galaxy_test/api/test_tools_upload.py
index 3a4a60bb52fc..00877c4afd39 100644
--- a/lib/galaxy_test/api/test_tools_upload.py
+++ b/lib/galaxy_test/api/test_tools_upload.py
@@ -989,6 +989,7 @@ def upload_file(url, path, api_key, history_id):
             # Upload a file to a tus server.
             uploader = my_client.uploader(path, metadata=metadata)
             uploader.upload()
+            assert uploader.url
             return uploader.url.rsplit("/", 1)[1]
 
         with self.dataset_populator.test_history() as history_id: