diff -r a0315e9f4c20 -r fbbb028d0a75 devtools/__init__.py
--- a/devtools/__init__.py	Wed Sep 02 12:08:31 2015 +0200
+++ b/devtools/__init__.py	Thu Sep 03 16:36:08 2015 +0200
@@ -165,7 +165,7 @@
             return None, None
         return self.anonymous_credential
 
-    def set_anonymous_allowed(self, allowed, anonuser='anon'):
+    def set_anonymous_allowed(self, allowed, anonuser=u'anon'):
         if allowed:
             self.anonymous_credential = (anonuser, anonuser)
         else: