diff --git a/platypush/message/__init__.py b/platypush/message/__init__.py
index 6dd3a65db..e08a75a5d 100644
--- a/platypush/message/__init__.py
+++ b/platypush/message/__init__.py
@@ -79,7 +79,7 @@ class Message:
                 return obj.value
 
             if is_dataclass(obj):
-                obj = asdict(obj)
+                return asdict(obj)
 
             # Don't serialize I/O wrappers/objects
             if isinstance(obj, io.IOBase):