diff --git a/src/openeo_aggregator/config.py b/src/openeo_aggregator/config.py
index 35e8f199..62e16132 100644
--- a/src/openeo_aggregator/config.py
+++ b/src/openeo_aggregator/config.py
@@ -27,6 +27,7 @@ class ConfigException(ValueError):
     pass
 
 
+# TODO #112 subclass from OpenEoBackendConfig
 class AggregatorConfig(dict):
     """
     Simple dictionary based configuration for aggregator backend