diff --git a/src/viur/core/bones/string.py b/src/viur/core/bones/string.py
index 5f15e1596..d858befea 100644
--- a/src/viur/core/bones/string.py
+++ b/src/viur/core/bones/string.py
@@ -221,6 +221,7 @@ def buildDBSort(
             elif not self.caseSensitive:
                 prop += ".idx"
 
+            # fixme: VIUR4 replace theses stupid numbers defining a sort-order by a meaningful keys
             sorting = {
                 "1": db.SortOrder.Descending,
                 "2": db.SortOrder.InvertedAscending,