diff --git a/cal/db.py b/cal/db.py
index 06103b17f7a82faa93d3d2614bda073e9dc041aa..a82b9504e392e81fac1c7142542b597ec6ba5afd 100644
--- a/cal/db.py
+++ b/cal/db.py
@@ -36,6 +36,7 @@ class DB:
         view_con = self.config.get('views').get('cal_docs')
         try:
             res = []
+            # Ex.: http://a73434.berlin.ptb.de:5984/vl_db/_design/share/_view/Cert/?key="2024_75466"&descending=true 
             for item in self.db.view("share/Cert", key=year_cert, descending=True):
                 doc = item.value
                 res.append(doc)