diff --git a/src/pymodaq_utils/serialize/factory.py b/src/pymodaq_utils/serialize/factory.py
index 77549359..4d8933ef 100644
--- a/src/pymodaq_utils/serialize/factory.py
+++ b/src/pymodaq_utils/serialize/factory.py
@@ -17,7 +17,7 @@ def name(cls):
     @classmethod
     def type(cls):
         """object: the type of the object"""
-        raise cls.__class__
+        return cls.__class__
 
     @staticmethod
     @abstractmethod