diff --git a/pkgs/tools/misc/parallel/default.nix b/pkgs/tools/misc/parallel/default.nix
index d96ca1080d83..1d3d14d7e234 100644
--- a/pkgs/tools/misc/parallel/default.nix
+++ b/pkgs/tools/misc/parallel/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
     sed -i 's,#![ ]*/usr/bin/env[ ]*perl,#!${perl}/bin/perl,' $out/bin/*
 
     wrapProgram $out/bin/parallel \
-      --prefix PATH : "${procps}/bin" \
+      ${if stdenv.isLinux then ("--prefix PATH \":\" ${procps}/bin") else ""} \
       --prefix PATH : "${perl}/bin" \
   '';