diff --git a/frappy/proxy.py b/frappy/proxy.py
index 9d7463d3..cabb6565 100644
--- a/frappy/proxy.py
+++ b/frappy/proxy.py
@@ -227,11 +227,11 @@ def Proxy(name, logger, cfgdict, srv):
     """
     remote_class = cfgdict.pop('remote_class')
     if isinstance(remote_class, dict):
-        remote_class = remote_class['default']
+        remote_class = remote_class['value']
 
     if 'description' not in cfgdict:
         cfgdict['description'] = 'remote module %s on %s' % (
             cfgdict.get('module', name),
-                cfgdict.get('io', {'default:': '?'})['default'])
+                cfgdict.get('io', {'value:': '?'})['value'])
 
     return proxy_class(remote_class)(name, logger, cfgdict, srv)
diff --git a/frappy/simulation.py b/frappy/simulation.py
index b0ddb000..f3918cf7 100644
--- a/frappy/simulation.py
+++ b/frappy/simulation.py
@@ -35,7 +35,7 @@ class SimBase:
         extra_params = cfgdict.pop('extra_params', '') or cfgdict.pop('.extra_params', '')
         attrs = {}
         if extra_params:
-            for k in extra_params['default'].split(','):
+            for k in extra_params['value'].split(','):
                 k = k.strip()
                 attrs[k] = Parameter('extra_param: %s' % k.strip(),
                                      datatype=FloatRange(),