diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,3 +1,3 @@
 # zipper-extra
 
-Zipper utils that weren't in `Control.Comonad.Store.Zipper`.
+Zipper utils that weren't in [comonad-extras](https://hackage.haskell.org/package/comonad-extras)
diff --git a/Setup.hs b/Setup.hs
deleted file mode 100644
--- a/Setup.hs
+++ /dev/null
@@ -1,2 +0,0 @@
-import Distribution.Simple
-main = defaultMain
diff --git a/src/Control/Comonad/Zipper/Extra.hs b/src/Control/Comonad/Zipper/Extra.hs
--- a/src/Control/Comonad/Zipper/Extra.hs
+++ b/src/Control/Comonad/Zipper/Extra.hs
@@ -14,7 +14,6 @@
 ) where
 
 import Control.Monad.Catch
-import Control.Exception
 import Control.Comonad.Store
 import Control.Comonad.Store.Zipper
 import Data.List.Split
@@ -37,7 +36,7 @@
 paginate' n xs = case paginate n xs of
                     Just x -> return x
                     Nothing -> if n == 0 then throwM ZeroPageSize
-                               else if length xs == 0 then throwM EmptyContentsError
+                               else if null xs then throwM EmptyContentsError
                                else throwM UnknownPaginationException
 
 -- | Return the peek of the next element if it exists.
@@ -59,4 +58,5 @@
   displayException EmptyZipper = "Can not create an empty zipper."
 
 -- | Like `zipper` but lifted to `MonadThrow`.
+zipper' :: (MonadThrow m, Traversable t) => t a -> m (Zipper t a)
 zipper' xs = maybe (throwM EmptyZipper) return $ zipper xs
diff --git a/zipper-extra.cabal b/zipper-extra.cabal
--- a/zipper-extra.cabal
+++ b/zipper-extra.cabal
@@ -1,13 +1,13 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.33.0.
+-- This file has been generated from package.yaml by hpack version 0.33.1.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: a2dff3a722a11cc68cda3cfaf56d455945de1a9c34ee268ad02e049c6a34886a
+-- hash: efbea88d20acdb5ae2f378dea5468ec8ea1e03c4b193105398ed5499d4d25184
 
 name:           zipper-extra
-version:        0.1.2.0
+version:        0.1.2.1
 synopsis:       Zipper utils that weren't in Control.Comonad.Store.Zipper
 description:    Adds some utility functions for and reexports Control.Comonad.Store.Zipper
 category:       Comonads