diff --git a/pkgs/development/libraries/tk/generic.nix b/pkgs/development/libraries/tk/generic.nix
index be09bb73b3a..a65c6053f29 100644
--- a/pkgs/development/libraries/tk/generic.nix
+++ b/pkgs/development/libraries/tk/generic.nix
@@ -32,11 +32,9 @@ stdenv.mkDerivation {
     ++ stdenv.lib.optional enableAqua "--enable-aqua";
 
   nativeBuildInputs = [ pkgconfig ];
+  buildInputs = lib.optional enableAqua (with darwin.apple_sdk.frameworks; [ Cocoa ]);
 
-  propagatedBuildInputs = [ tcl libXft ]
-    ++ lib.optional enableAqua (with darwin; with apple_sdk.frameworks; [
-      Cocoa cf-private
-    ]);
+  propagatedBuildInputs = [ tcl libXft ];
 
   doCheck = false; # fails. can't find itself