diff --git a/servant-server/src/Servant/Server/Internal.hs b/servant-server/src/Servant/Server/Internal.hs
index 93b0a2ff..1733f246 100644
--- a/servant-server/src/Servant/Server/Internal.hs
+++ b/servant-server/src/Servant/Server/Internal.hs
@@ -222,7 +222,7 @@ instance OVERLAPPING_
 -- Example:
 --
 -- > newtype Referer = Referer Text
--- >   deriving (Eq, Show, FromHttpApiData, ToText)
+-- >   deriving (Eq, Show, FromHttpApiData)
 -- >
 -- >            -- GET /view-my-referer
 -- > type MyApi = "view-my-referer" :> Header "Referer" Referer :> Get '[JSON] Referer