--- a/servo/python/servo/testing_commands.py
+++ b/servo/python/servo/testing_commands.py
@@ -491,24 +491,22 @@ class MachCommands(CommandBase):
         kwargs['test_list'].append(str('SKIP_TESTS'))
         kwargs['manifest_update'] = True
         return self.test_wpt(**kwargs)
 
     @Command('update-wpt',
              description='Update the web platform tests',
              category='testing',
              parser=updatecommandline.create_parser())
-    @CommandArgument('--patch', action='store_true', default=False,
-                     help='Create an mq patch or git commit containing the changes')
-    def update_wpt(self, patch, **kwargs):
+    def update_wpt(self, **kwargs):
         self.ensure_bootstrapped()
         run_file = path.abspath(path.join("tests", "wpt", "update.py"))
-        kwargs["no_patch"] = not patch
+        patch = kwargs.get("patch", False)
 
-        if kwargs["no_patch"] and kwargs["sync"]:
+        if not patch and kwargs["sync"]:
             print("Are you sure you don't want a patch?")
             return 1
 
         run_globals = {"__file__": run_file}
         execfile(run_file, run_globals)
         return run_globals["update_tests"](**kwargs)
 
     @Command('filter-intermittents',