diff --git a/saqc/core/translation/basescheme.py b/saqc/core/translation/basescheme.py
index 712a0f03bd64078f76b997b5ab7c59db36a8dfb2..127d438a37e22d4da1cd6acf22f94e60d3895cc2 100644
--- a/saqc/core/translation/basescheme.py
+++ b/saqc/core/translation/basescheme.py
@@ -115,7 +115,7 @@ class MappingScheme(TranslationScheme):
 
         Returns
         -------
-        pd.DataFrame, Flags
+        DictOfSeries
         """
         if isinstance(flags, pd.Series):
             flags = flags.to_frame()