diff --git a/ghc/lib/std/System.lhs b/ghc/lib/std/System.lhs
index 096a860d6ba6c5c72a96187ffbdf0b5359aff2ae..192fa29ac49c205c569eec2ff0b163ea3f773087 100644
--- a/ghc/lib/std/System.lhs
+++ b/ghc/lib/std/System.lhs
@@ -13,7 +13,6 @@ module System (
 import Prelude
 import PrelAddr
 import PrelIOBase	( IOError(..), IOErrorType(..), constructErrorAndFailWithInfo )
-import PrelArr		( indexAddrOffAddr )
 import PrelPack    	( unpackCString )
 
 \end{code}