diff --git a/yorm/__init__.py b/yorm/__init__.py
index 812b70d..4e0c8f3 100644
--- a/yorm/__init__.py
+++ b/yorm/__init__.py
@@ -3,7 +3,7 @@
 import sys
 
 __project__ = 'YORM'
-__version__ = '0.4dev14'
+__version__ = '0.4.dev15'
 
 VERSION = __project__ + '-' + __version__
 
diff --git a/yorm/converters/containers.py b/yorm/converters/containers.py
index d79641e..170d513 100644
--- a/yorm/converters/containers.py
+++ b/yorm/converters/containers.py
@@ -106,7 +106,7 @@ def apply(self, data):
             if issubclass(converter, Container):
                 container = getattr(self, name, None)
                 if not isinstance(container, converter):
-                    container = converter()
+                    container = converter.default()
                     setattr(self, name, container)
                 container.apply(data)
                 value[name] = container
@@ -152,7 +152,7 @@ def to_value(cls, data):
 
         for item in to_list(data):
             if issubclass(cls.item_type, Container):
-                container = cls.item_type()  # pylint: disable=E1120
+                container = cls.item_type.default()  # pylint: disable=E1120
                 container.apply(item)
                 value.append(container)
             else:
@@ -187,10 +187,10 @@ def apply(self, data):
                 try:
                     container = self[len(value)]
                 except IndexError:
-                    container = converter()  # pylint: disable=E1120
+                    container = converter.default()  # pylint: disable=E1120
                 else:
                     if not isinstance(container, converter):
-                        container = converter()  # pylint: disable=E1120
+                        container = converter.default()  # pylint: disable=E1120
 
                 container.apply(item)
                 value.append(container)