diff --git a/pkgs/applications/editors/poke/default.nix b/pkgs/applications/editors/poke/default.nix
index a8435eb1e6ba..7f8a2fdaa7ac 100644
--- a/pkgs/applications/editors/poke/default.nix
+++ b/pkgs/applications/editors/poke/default.nix
@@ -40,7 +40,7 @@ in stdenv.mkDerivation rec {
   ] ++ lib.optional guiSupport makeWrapper;
 
   buildInputs = [ boehmgc readline ]
-  ++ lib.optional guiSupport tk
+  ++ lib.optionals guiSupport [tk tcl.tclPackageHook tcllib]
   ++ lib.optional miSupport json_c
   ++ lib.optional nbdSupport libnbd
   ++ lib.optional textStylingSupport gettext
@@ -57,11 +57,6 @@ in stdenv.mkDerivation rec {
   doCheck = !isCross;
   checkInputs = lib.optionals (!isCross) [ dejagnu ];
 
-  postFixup = lib.optionalString guiSupport ''
-    wrapProgram "$out/bin/poke-gui" \
-      --prefix TCLLIBPATH ' ' ${tcllib}/lib/tcllib${tcllib.version}
-  '';
-
   meta = with lib; {
     description = "Interactive, extensible editor for binary data";
     homepage = "http://www.jemarch.net/poke";