diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index c2cedce16083..e844b2999a78 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4307,7 +4307,7 @@ rec {
 
     propagatedBuildInputs =
       [ dateutil nose numpy pyparsing tornado pkgs.freetype pkgs.libpng pkgs.pkgconfig
-        pygtk ];
+      ];
 
     meta = with stdenv.lib; {
       description = "python plotting library, making publication quality plots";