diff --git a/tiramisu/config.py b/tiramisu/config.py
index 3ad66be..c47932a 100644
--- a/tiramisu/config.py
+++ b/tiramisu/config.py
@@ -378,6 +378,8 @@ class Config(object):
             if not isinstance(child, OptionDescription):
                 try:
                     yield child._name, getattr(self, child._name)
+                except GeneratorExit:
+                    raise StopIteration
                 except:
                     pass  # option with properties
 
@@ -387,6 +389,8 @@ class Config(object):
         for child in self._cfgimpl_descr._children:
             try:
                 yield child._name, getattr(self, child._name)
+            except GeneratorExit:
+                raise StopIteration
             except:
                 pass  # option with properties
 
@@ -411,6 +415,8 @@ class Config(object):
                             yield child._name, getattr(self, child._name)
                     else:
                         yield child._name, getattr(self, child._name)
+                except GeneratorExit:
+                    raise StopIteration
                 except:
                     pass
     # ______________________________________________________________________