diff --git a/Data/ByteString.hs b/Data/ByteString.hs
--- a/Data/ByteString.hs
+++ b/Data/ByteString.hs
@@ -251,6 +251,7 @@
 import System.IO.Unsafe
 import qualified System.Environment
 import qualified System.IO      (hGetLine)
+import System.IO                (hIsEOF)
 #endif
 
 #if defined(__GLASGOW_HASKELL__)
diff --git a/bytestring.cabal b/bytestring.cabal
--- a/bytestring.cabal
+++ b/bytestring.cabal
@@ -1,5 +1,5 @@
 Name:                bytestring
-Version:             0.9.1.9
+Version:             0.9.1.10
 Synopsis:            Fast, packed, strict and lazy byte arrays with a list interface
 Description:
     A time and space-efficient implementation of byte vectors using