diff --git a/gen-imports.cabal b/gen-imports.cabal
--- a/gen-imports.cabal
+++ b/gen-imports.cabal
@@ -1,5 +1,5 @@
 name:                gen-imports
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:            Code to generate instances for the package "ghc-instances"
 description:
   Functions in this package look at the hackage database to get all the public modules of packages.
diff --git a/src/Distribution/Hackage/Imports/Generate.hs b/src/Distribution/Hackage/Imports/Generate.hs
--- a/src/Distribution/Hackage/Imports/Generate.hs
+++ b/src/Distribution/Hackage/Imports/Generate.hs
@@ -3,8 +3,6 @@
 
 module Distribution.Hackage.Imports.Generate where
 
-import Data.ByteString (ByteString)
-
 import Distribution.Hackage.DB (Hackage, Version, readHackage)
 import Distribution.PackageDescription (
   GenericPackageDescription(packageDescription, condLibrary),
@@ -27,7 +25,6 @@
 import Data.Char (toUpper)
 import Data.Foldable (traverse_)
 import Data.List (intercalate)
-import Debug.Trace (traceShowId)
 
 type PackageName = String
 
@@ -61,7 +58,7 @@
   languageCpp = "{-# LANGUAGE CPP #-}"
   guard = "#ifdef MIN_VERSION_" <> packageNameDoc
   packageNameDoc = text (replace_dash <$> toString packageName)
-  moduleHeader = "module " <> disp moduleName <> " where"
+  moduleHeader = "module " <> disp moduleName <> " () where"
   endIf = case l of
     [] -> mempty
     _ -> "#endif"