diff --git a/tiramisu/config.py b/tiramisu/config.py
index b3f9f80..19b55c2 100644
--- a/tiramisu/config.py
+++ b/tiramisu/config.py
@@ -217,7 +217,8 @@ class SubConfig(object):
             object.__setattr__(self, name, value)
             return
         if '.' in name:  # pragma: optional cover
-            homeconfig, name = self.cfgimpl_get_home_by_path(name)
+            homeconfig, name = self.cfgimpl_get_home_by_path(name,
+                                                             force_permissive=force_permissive)
             return homeconfig.setattr(name, value, force_permissive,
                                       not_raises)
         context = self._cfgimpl_get_context()