diff --git a/src/mercury_engine_data_structures/adapters/flagsenum_adapter.py b/src/mercury_engine_data_structures/adapters/flagsenum_adapter.py
index 732cd54c..b14d37fc 100644
--- a/src/mercury_engine_data_structures/adapters/flagsenum_adapter.py
+++ b/src/mercury_engine_data_structures/adapters/flagsenum_adapter.py
@@ -12,4 +12,4 @@ def _decode(self, obj, context, path):
         return {self._enum_class[k]: v for k, v in obj.items() if k != "_flagsenum" and v is True}
 
     def _encode(self, obj, context, path):
-        return obj
+        return {k.name: v for k, v in obj.items()}