diff --git a/pkgs/build-support/gcc-wrapper/default.nix b/pkgs/build-support/gcc-wrapper/default.nix
index 717151f2fb8a..d3f957d18a2d 100644
--- a/pkgs/build-support/gcc-wrapper/default.nix
+++ b/pkgs/build-support/gcc-wrapper/default.nix
@@ -67,7 +67,7 @@ stdenv.mkDerivation {
     dynamicLinker =
       (if stdenv.cross.arch == "arm" then "ld-linux.so.3" else
        if stdenv.cross.arch == "mips" then "ld.so.1" else
-       if stdenv.lib.hasSuffix "pc-gnu" cross.config then "ld.so.1" else
+       if stdenv.lib.hasSuffix "pc-gnu" stdenv.cross.config then "ld.so.1" else
        abort "don't know the name of the dynamic linker for this platform");
   };