diff --git a/pkgs/development/compilers/ghc/7.8.1.nix b/pkgs/development/compilers/ghc/7.8.1.nix
index c9ca6fd8719b..f58ca9cc1fc2 100644
--- a/pkgs/development/compilers/ghc/7.8.1.nix
+++ b/pkgs/development/compilers/ghc/7.8.1.nix
@@ -22,6 +22,7 @@ stdenv.mkDerivation rec {
   preConfigure = ''
     echo "${buildMK}" > mk/build.mk
     sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
+  '' + stdenv.lib.optionalString (!stdenv.isDarwin) ''
     export NIX_LDFLAGS="$NIX_LDFLAGS -rpath $out/lib/ghc-${version}"
   '';