diff --git a/backend/open_webui/test/apps/webui/storage/test_provider.py b/backend/open_webui/test/apps/webui/storage/test_provider.py
index e434523f8..6770add7b 100644
--- a/backend/open_webui/test/apps/webui/storage/test_provider.py
+++ b/backend/open_webui/test/apps/webui/storage/test_provider.py
@@ -305,6 +305,7 @@ class TestAzureStorageProvider:
         mock_container_client.get_blob_client.return_value = mock_blob_client
 
         # Mock `from_connection_string` and `BlobServiceClient` constructor
+        monkeypatch.setattr(provider, "BlobServiceClient", lambda *_: mock_blob_service_client)
         monkeypatch.setattr("azure.storage.blob.BlobServiceClient", lambda *_: mock_blob_service_client)
 
         # Apply to instance variables