diff --git a/shake-ext.cabal b/shake-ext.cabal
--- a/shake-ext.cabal
+++ b/shake-ext.cabal
@@ -1,5 +1,5 @@
 name:                shake-ext
-version:             0.3.1.0
+version:             0.3.1.1
 synopsis:            Helper functions for linting with shake 
 description:         This package provides several linters out of the box, as well as functionality for building ATS source files with [shake](http://shakebuild.com/).
 homepage:            https://hub.darcs.net/vmchale/shake-ext
diff --git a/src/Development/Shake/Linters.hs b/src/Development/Shake/Linters.hs
--- a/src/Development/Shake/Linters.hs
+++ b/src/Development/Shake/Linters.hs
@@ -18,8 +18,8 @@
     (Stdout out) <- cmd (s ++ " " ++ p)
     if contents == out then pure () else error "formatter is not fully applied!"
 
-atsfmt :: String -> [FilePath] -> Action ()
-atsfmt s = mapM_ (checkIdempotent s)
+atsfmt :: [FilePath] -> Action ()
+atsfmt = mapM_ (checkIdempotent "atsfmt")
 
 checkFiles :: String -> [FilePath] -> Action ()
 checkFiles str = mapM_ (cmd_ . ((str ++ " ") ++))