diff --git a/Graphics/UI/Gtk/General/Structs.hsc b/Graphics/UI/Gtk/General/Structs.hsc
index 2df0385..c1b8452 100644
--- a/Graphics/UI/Gtk/General/Structs.hsc
+++ b/Graphics/UI/Gtk/General/Structs.hsc
@@ -1,4 +1,5 @@
 {-# LANGUAGE ScopedTypeVariables, TypeSynonymInstances #-}
+{-# LANGUAGE FlexibleInstances #-}
 {-# OPTIONS_HADDOCK hide #-}
 -- -*-haskell-*-
 
diff --git a/gtk.cabal b/gtk.cabal
index bd97975..aa7165f 100644
--- a/gtk.cabal
+++ b/gtk.cabal
@@ -126,7 +126,7 @@ Flag have-gio
 
 Library
         build-depends:  base >= 4 && < 5,
-                        array, containers, haskell98, mtl, bytestring,
+                        array, containers, mtl, bytestring,
                         glib  >= 0.12.0 && < 0.13,
                         pango >= 0.12.0 && < 0.13,
                         cairo >= 0.12.0 && < 0.13