--- embed/mozilla/EphyXULAppInfo.cpp~	2009-05-28 21:26:21.000000000 +0200
+++ embed/mozilla/EphyXULAppInfo.cpp~	2010-03-08 23:29:42.000000000 +0100
@@ -128,3 +128,11 @@ 
   aXPCOMABI.Assign (EPHY_HOST_CPU "-gcc3");
   return NS_OK;
 }
+
+/* readonly attribute AUTF8String WidgetToolkit; */
+NS_IMETHODIMP
+EphyXULAppInfo::GetWidgetToolkit(nsACString & aWidgetToolkit)
+{
+  aWidgetToolkit.Assign ("gtk");
+  return NS_OK;
+}