diff --git a/lxc/__init__.py b/lxc/__init__.py
index a768ac3..b579b24 100644
--- a/lxc/__init__.py
+++ b/lxc/__init__.py
@@ -167,7 +167,7 @@ class lxc():
             info[key.lower()] = value
 
         # get container size
-        info['container_size'] = self.__get_container_size(name)
+        info['size'] = self.__get_container_size(name)
         return info
 
     def __get_container_size(self, name):