--- a/devtools/__init__.py	Mon Dec 21 10:08:13 2015 +0100
+++ b/devtools/__init__.py	Mon Dec 21 12:47:35 2015 +0100
@@ -151,7 +151,7 @@
             else: # cube test
                 apphome = abspath('..')
         self._apphome = apphome
-        ServerConfiguration.__init__(self, appid)
+        super(TestServerConfiguration, self).__init__(appid)
         self.init_log(log_threshold, force=True)
         # need this, usually triggered by cubicweb-ctl
         self.load_cwctl_plugins()