--- a/mercurial/url.py	Tue Jul 11 08:52:55 2017 -0700
+++ b/mercurial/url.py	Fri Jul 14 14:22:40 2017 -0700
@@ -454,7 +454,7 @@
     authinfo will be added to the password manager
     '''
     # experimental config: ui.usehttp2
-    if ui.configbool('ui', 'usehttp2', False):
+    if ui.configbool('ui', 'usehttp2'):
         handlers = [
             httpconnectionmod.http2handler(
                 ui,