diff --git a/cabal-install/Distribution/Client/Get.hs b/cabal-install/Distribution/Client/Get.hs
index 0ef057e38f6..006eb57d665 100644
--- a/cabal-install/Distribution/Client/Get.hs
+++ b/cabal-install/Distribution/Client/Get.hs
@@ -54,7 +54,7 @@ import Distribution.Solver.Types.SourcePackage
 import Control.Exception
          ( Exception(..), catch, throwIO )
 import Control.Monad
-         ( mapM, forM_, mapM_, unless )
+         ( mapM, forM_, mapM_ )
 import qualified Data.Map as Map
 import System.Directory
          ( createDirectoryIfMissing, doesDirectoryExist, doesFileExist )