diff --git a/src/Handler/Utils/Table/Pagination.hs b/src/Handler/Utils/Table/Pagination.hs
index 50e666ed0..cfb7b1231 100644
--- a/src/Handler/Utils/Table/Pagination.hs
+++ b/src/Handler/Utils/Table/Pagination.hs
@@ -1066,6 +1066,8 @@ dbTable PSValidator{..} dbtable@DBTable{ dbtIdent = dbtIdent'@(toPathPiece -> db
            <|> piInput
 
   psShortcircuit <- (== Just dbtIdent') <$> lookupCustomHeader HeaderDBTableShortcircuit
+  lch <- lookupCustomHeader HeaderDBTableShortcircuit
+  $logErrorS "DBShortcircuit" $ fromMaybe mempty lch <> " and also " <> tshow psShortcircuit
 
   let
     -- adjustPI = over _piSorting $ guardOnM doSorting -- probably not neccessary; not displaying the links should be enough for now
diff --git a/src/Model/Types/Lms.hs b/src/Model/Types/Lms.hs
index d9a58a646..3a5ae6ea4 100644
--- a/src/Model/Types/Lms.hs
+++ b/src/Model/Types/Lms.hs
@@ -12,6 +12,7 @@ import Database.Persist.Sql
 import qualified Database.Esqueleto.Legacy as E
 import qualified Data.Csv as Csv
 import qualified Data.Time.Format as Time
+import Data.Time.Format.ISO8601 (iso8601ParseM)
 import Utils.Lens.TH
 
 newtype LmsIdent = LmsIdent { getLmsIdent :: Text }
@@ -54,7 +55,7 @@ instance Csv.FromField LmsBool where
   parseField i
     | i == "0"  = pure $ LmsBool False
     | i == "1"  = pure $ LmsBool True 
-    | otherwise = empty
+    | otherwise = mempty
 
 -- | LMS interface requires day format not compliant with iso8601
 newtype LmsDay = LmsDay { lms2day :: Day }
@@ -76,4 +77,5 @@ instance Csv.FromField LmsDay where
   parseField i = do 
     s <- Csv.parseField i 
     d <- Time.parseTimeM True Time.defaultTimeLocale lmsDayFormat s
+         <|> iso8601ParseM s -- Know-How AG considers supplying iso8601 dates in the future
     return $ LmsDay d