diff --git a/tools/run-mypy b/tools/run-mypy
index 26aa4a2fbc..ec5166db59 100755
--- a/tools/run-mypy
+++ b/tools/run-mypy
@@ -18,7 +18,6 @@ docs/conf.py
 tools/deprecated/
 zproject/settings.py
 zproject/test_settings.py
-zproject/urls.py
 zerver/management/commands/makemessages.py
 zerver/migrations/
 zerver/tests/
diff --git a/zproject/urls.py b/zproject/urls.py
index e23f1aea00..70d59d9330 100644
--- a/zproject/urls.py
+++ b/zproject/urls.py
@@ -90,8 +90,7 @@ i18n_urls = [
     url(r'^features/$', TemplateView.as_view(template_name='zerver/features.html')),
 ]
 
-urlpatterns = []
-urlpatterns += patterns('', *i18n_urls)
+urlpatterns = patterns('', *i18n_urls)
 
 # These are used for voyager development. On a real voyager instance,
 # these files would be served by nginx.