diff --git a/pkgs/tools/text/gnugrep/default.nix b/pkgs/tools/text/gnugrep/default.nix
index d03db13ed4203..12b2b69853f89 100644
--- a/pkgs/tools/text/gnugrep/default.nix
+++ b/pkgs/tools/text/gnugrep/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation {
 
   patches = [ ./cve-2015-1345.patch ];
 
-  buildInputs = [ pcre libiconv ];
+  nativeBuildInputs = [ pcre libiconv ];
 
   # cygwin: FAIL: multibyte-white-space
   doCheck = !stdenv.isDarwin && !stdenv.isCygwin;