diff --git a/pyiron_base/project/decorator.py b/pyiron_base/project/decorator.py
index de3c39731..78d0d557f 100644
--- a/pyiron_base/project/decorator.py
+++ b/pyiron_base/project/decorator.py
@@ -94,6 +94,7 @@ def get_delayed_object(
             list_length=list_length,
             **kwargs,
         )
+        delayed_job_object._python_function = python_function
         delayed_job_object._server = Server(**pyiron_resource_dict)
         return delayed_job_object
 
diff --git a/pyiron_base/project/delayed.py b/pyiron_base/project/delayed.py
index 59ef398fe..39fb0ff7b 100644
--- a/pyiron_base/project/delayed.py
+++ b/pyiron_base/project/delayed.py
@@ -241,6 +241,7 @@ def __init__(
             pass
         self.__name__ = "DelayedObject"
         self._result = None
+        self._python_function = None
         self._server = Server()
         self._output_key = output_key
         self._output_file = output_file
@@ -294,6 +295,7 @@ def __copy__(self):
             list_length=self._list_length,
             list_index=self._list_index,
         )
+        obj_copy._python_function = self._python_function
         obj_copy._input = self._input
         obj_copy._result = self._result
         obj_copy._server.from_dict(self._server.to_dict())