diff --git a/cfg/gtk.cfg b/cfg/gtk.cfg
index d5c55b2ca..3486e70f6 100644
--- a/cfg/gtk.cfg
+++ b/cfg/gtk.cfg
@@ -49,6 +49,7 @@
   <define name="G_DEFINE_DYNAMIC_TYPE_EXTENDED(TN, t_n, T_P, _f_, _C_)" value=""/>
   <define name="G_DEFINE_BOXED_TYPE(TypeName,type_name,copy_func,free_func)" value=""/>
   <define name="G_DEFINE_BOXED_TYPE_WITH_CODE(TypeName,type_name,copy_func,free_func,_C_)" value=""/>
+  <define name="G_DEFINE_QUARK(QN,q_n)" value=""/>
   <define name="G_BEGIN_DECLS" value=""/>
   <define name="G_END_DECLS" value=""/>
   <define name="G_ADD_PRIVATE(TypeName)" value=""/>