diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 9c527ccf65d..80bc0781664 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -584,7 +584,10 @@ in {
 
   pygtail = callPackage ../development/python-modules/pygtail { };
 
-  pygtk = callPackage ../development/python-modules/pygtk { libglade = null; };
+  pygtk = callPackage ../development/python-modules/pygtk {
+    inherit (pkgs) pkgconfig;
+    libglade = null;
+  };
 
   pygtksourceview = callPackage ../development/python-modules/pygtksourceview { };