diff --git a/tools/mercurial/hgsetup/update.py b/tools/mercurial/hgsetup/update.py
index a0f9115423d1..d507ddaad10c 100644
--- a/tools/mercurial/hgsetup/update.py
+++ b/tools/mercurial/hgsetup/update.py
@@ -26,7 +26,7 @@ class MercurialUpdater(object):
         self.ext_dir = os.path.join(self.state_dir, 'mercurial', 'extensions')
         self.vcs_tools_dir = os.path.join(self.state_dir, 'version-control-tools')
 
-    def update_all(self, config_paths):
+    def update_all(self):
         try:
             os.makedirs(self.ext_dir)
         except OSError as e:
diff --git a/tools/mercurial/mach_commands.py b/tools/mercurial/mach_commands.py
index abdab9b6de49..e9efb6eba3fd 100644
--- a/tools/mercurial/mach_commands.py
+++ b/tools/mercurial/mach_commands.py
@@ -61,7 +61,7 @@ class VersionControlCommands(object):
         if update_only:
             from hgsetup.update import MercurialUpdater
             updater = MercurialUpdater(self._context.state_dir)
-            result = updater.update_all(map(os.path.expanduser, config_paths))
+            result = updater.update_all()
         else:
             from hgsetup.wizard import MercurialSetupWizard
             wizard = MercurialSetupWizard(self._context.state_dir)