diff --git a/pkgs/servers/misc/taskserver/default.nix b/pkgs/servers/misc/taskserver/default.nix
index a1502b4d6c44..0511c822ebe6 100644
--- a/pkgs/servers/misc/taskserver/default.nix
+++ b/pkgs/servers/misc/taskserver/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
       echo wrapping $i
       makeWrapper  $pkipath/$i $out/bin/taskd-pki-$i \
-        --prefix PATH : ${gnutls}/bin/
+        --prefix PATH : ${stdenv.lib.makeBinPath [ gnutls ]}
     done
   '';