diff --git a/pkgs/development/libraries/libiconv/default.nix b/pkgs/development/libraries/libiconv/default.nix
index 9b62436ae08..5f1f6afcec1 100644
--- a/pkgs/development/libraries/libiconv/default.nix
+++ b/pkgs/development/libraries/libiconv/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   ];
 
   postPatch =
-    lib.optionalString (stdenv.cross.libc or null == "msvcrt")
+    lib.optionalString ((stdenv ? cross && stdenv.cross.libc == "msvcrt") || stdenv.cc.nativeLibc)
       ''
         sed '/^_GL_WARN_ON_USE (gets/d' -i srclib/stdio.in.h
       '';