diff --git a/broadworks_ocip/base.py b/broadworks_ocip/base.py
index 2f79cbf..dffb8c1 100644
--- a/broadworks_ocip/base.py
+++ b/broadworks_ocip/base.py
@@ -463,8 +463,7 @@ def to_dict(self) -> Dict[str, Any]:
         suite at present.
         """
         elements = super().to_dict()  # pick up the base object data
-        elements["session_id"] = self.session_id
-        return elements
+        return {"session_id": self.session_id, **elements}
 
 
 class OCIRequest(OCICommand):