diff --git a/comm/cfg.py b/comm/cfg.py
index dcaaa38..934164e 100644
--- a/comm/cfg.py
+++ b/comm/cfg.py
@@ -41,6 +41,8 @@ class CfgObject:
     def as_dict(self):
         data = {}
         for key, value in self.__dict__.items():
+            if key == "_freeze":
+                continue
             if isinstance(value, CfgObject):
                 data[key] = value.as_dict()
             else: