diff --git a/pkgs/development/libraries/v8/default.nix b/pkgs/development/libraries/v8/default.nix
index 3fc3138ef52..13c2990c73d 100644
--- a/pkgs/development/libraries/v8/default.nix
+++ b/pkgs/development/libraries/v8/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation {
       ln -sv ${gyp}/bin/gyp build/gyp/gyp
     '';
 
-    nativeBuildInputs = stdenv.lib.optional (system == "i686-linux") which;
+    nativeBuildInputs = [ which ];
     buildInputs = [ readline python ];
 
     buildFlags = [
@@ -35,6 +35,9 @@ stdenv.mkDerivation {
       "${arch}.release"
     ];
 
+    # http://code.google.com/p/v8/issues/detail?id=2149
+    NIX_CFLAGS_COMPILE = "-Wno-unused-local-typedefs -Wno-aggressive-loop-optimizations";
+
     enableParallelBuilding = true;
 
     installPhase = ''