diff --git a/pkgs/development/tools/literate-programming/noweb/default.nix b/pkgs/development/tools/literate-programming/noweb/default.nix
index 333491d9a3d..43cb6e6c2c7 100644
--- a/pkgs/development/tools/literate-programming/noweb/default.nix
+++ b/pkgs/development/tools/literate-programming/noweb/default.nix
@@ -23,6 +23,8 @@ let noweb = stdenv.mkDerivation rec {
   makeFlags = stdenv.lib.optionals (!isNull icon-lang) [
     "LIBSRC=icon"
     "ICONC=icont"
+  ] ++ stdenv.lib.optionals stdenv.isDarwin [
+    "CC=clang"
   ];
 
   installFlags = [