diff --git a/tiramisu/api.py b/tiramisu/api.py
index d7bc472..97cc612 100644
--- a/tiramisu/api.py
+++ b/tiramisu/api.py
@@ -700,8 +700,7 @@ class TiramisuConfig(TiramisuHelp):
                                    config,
                                    storage=storage)
         if isinstance(config, KernelGroupConfig):
-            return await GroupConfig(config,
-                                     storage=storage)
+            return await GroupConfig(config)
         raise Exception(_('unknown config type {}').format(type(config)))
 
     async def _reset_config_properties(self,
@@ -1481,9 +1480,13 @@ class _TiramisuContextGroupConfig(TiramisuConfig):
         config = self._config_bag.context
         for spath in spaths:
             config = config.getconfig(spath)
+        if isinstance(config, KernelGroupConfig):
+            return self._return_config(config,
+                                       None)
         return self._return_config(config,
                                    config._storage)
 
+
     async def copy(self,
                    session_id=None,
                    storage=None):
@@ -1501,7 +1504,7 @@ class _TiramisuContextGroupConfig(TiramisuConfig):
                        storage=None,
                        metaconfig_prefix=None):
         if storage is None:
-            storage = self._config_bag.config._storage
+            storage = self._config_bag.context._storage
         async with self._config_bag.context.getconnection() as connection:
             config = await self._config_bag.context.duplicate(connection,
                                                               session_id,