diff --git a/testing/web-platform/tests/tools/webdriver/webdriver/transport.py b/testing/web-platform/tests/tools/webdriver/webdriver/transport.py
index de58d85690f7..a2412643e04f 100644
--- a/testing/web-platform/tests/tools/webdriver/webdriver/transport.py
+++ b/testing/web-platform/tests/tools/webdriver/webdriver/transport.py
@@ -41,6 +41,7 @@ class Response(object):
 
         return cls(status, body)
 
+
 class HTTPWireProtocol(object):
     """Transports messages (commands and responses) over the WebDriver
     wire protocol.