diff --git a/pkgs/development/tools/literate-programming/noweb/default.nix b/pkgs/development/tools/literate-programming/noweb/default.nix
index c02764035161..6847aff097c8 100644
--- a/pkgs/development/tools/literate-programming/noweb/default.nix
+++ b/pkgs/development/tools/literate-programming/noweb/default.nix
@@ -57,7 +57,7 @@ lib.fix (noweb: stdenv.mkDerivation rec {
         # NOTE: substituteInPlace breaks Icon binaries, so make sure the script
         #       uses (n)awk before calling.
         if grep -q nawk "$f"; then
-            substituteInPlace "$f" --replace "nawk" "${nawk}/bin/awk"
+            substituteInPlace "$f" --replace "nawk" "${nawk}/bin/nawk"
         fi
     done