diff --git a/src/API/Catalogue.hs b/src/API/Catalogue.hs
index 244f6dc..98c14b6 100644
--- a/src/API/Catalogue.hs
+++ b/src/API/Catalogue.hs
@@ -102,22 +102,24 @@ instance VersionedCatalog AppM 1 where
   getChannels = getChannelsV1
   getBooks = getBooksV1
 
+relUrl :: Text -> Rel
+relUrl x = Rel ("/api/current/" <> x)
+
 getBooksV1 :: Channel.ChannelID -> SafeUser -> AppM (Catalog 1)
 getBooksV1 identifier SafeUser{} = do
   updated <- liftIO getCurrentTime
-  let self = Rel ("/api/current/" <> selfUrl)
-      start = Rel ("/api/current/" <> startUrl)
+  let self = relUrl selfUrl
+      start = relUrl startUrl
       selfUrl = pack . uriPath . linkURI $ safeLink (Proxy @(BaseAPI 1)) (Proxy @(ChannelCatalog 1)) identifier
       startUrl = pack . uriPath . linkURI $ safeLink (Proxy @(BaseAPI 1)) (Proxy @(RootCatalog 1))
       entries = mempty
       pagination = Pagination Nothing Nothing
   pure CatalogV1{..}
 
-
 getChannelsV1 :: SafeUser -> AppM (Catalog 1)
 getChannelsV1 SafeUser{username} = do
   updated <- liftIO getCurrentTime
-  let self = Rel ("/api/current/" <> selfUrl)
+  let self = relUrl selfUrl
       -- I'm not sure if this safe link approach is really useable with this
       -- api hierarchy since I can't access the topmost api from here. Also
       -- authentication would bring a little bit of extra effort as well
@@ -130,7 +132,7 @@ getChannelsV1 SafeUser{username} = do
     fromChannel :: UTCTime -> Channel.Channel -> Entry 1
     fromChannel updated Channel.Channel{..} =
       let url = pack . uriPath . linkURI $ safeLink (Proxy @(BaseAPI 1)) (Proxy @(ChannelCatalog 1)) identifier
-          self = Rel ("/api/current/" <> url)
+          self = relUrl url
       in EntryV1 channel channel updated channel (Left $ SubSection self)
 
 type VersionedAPI (v :: Nat) = Auth '[SA.BasicAuth, SA.JWT] SafeUser :> BaseAPI v