diff --git a/cwality-maps/Main.hs b/cwality-maps/Main.hs
index be2b0a6d771a8b3a777bea23be801ce0c534ef24..f242b9481f04a4dbacb546dc2b0a5f5530132ec3 100644
--- a/cwality-maps/Main.hs
+++ b/cwality-maps/Main.hs
@@ -58,11 +58,8 @@ instance FromHttpApiData JsonFilename where
 newtype Tag = Tag Text
   deriving (Generic, FromJSON)
 
-data MapParams = MapParams
-  { contentWarnings :: [Tag]
-  , backUrl         :: Text
-  , exitUrl         :: Maybe Text
-  , substs          :: Map Text Text
+newtype MapParams = MapParams
+  { substs          :: Map Text Text
   } deriving (Generic, FromJSON)
 
 instance FromHttpApiData MapParams where