diff --git a/include/wx/object.h b/include/wx/object.h
index b215797a0e..280292cb54 100644
--- a/include/wx/object.h
+++ b/include/wx/object.h
@@ -28,11 +28,11 @@ class WXDLLIMPEXP_BASE wxObject;
 
 #if wxUSE_DYNAMIC_CLASSES
 
-#ifndef wxUSE_XTI 
-#define wxUSE_XTI 0
+#ifndef wxUSE_EXTENDED_RTTI 
+#define wxUSE_EXTENDED_RTTI 0
 #endif
 
-#if wxUSE_XTI
+#if wxUSE_EXTENDED_RTTI
 
 #include "wx/xti.h"
 
@@ -209,7 +209,7 @@ WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxChar *name);
 #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
 #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
 
-#endif // !wxUSE_XTI
+#endif // !wxUSE_EXTENDED_RTTI
 
 
 // -----------------------------------