diff --git a/include/wx/spinbutt.h b/include/wx/spinbutt.h
index 5df76fb0a3..76a7b8b187 100644
--- a/include/wx/spinbutt.h
+++ b/include/wx/spinbutt.h
@@ -113,18 +113,12 @@ public:
 typedef void (wxEvtHandler::*wxSpinEventFunction)(wxSpinEvent&);
 
 // macros for handling spin events
-#ifndef EVT_SPIN_UP
 #define EVT_SPIN_UP(id, func) \
-    wxEventTableEntry( wxEVT_SCROLL_LINEUP, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxSpinEventFunction) & func ),
-#endif
-#ifndef EVT_SPIN_DOWN
+    wxEventTableEntry( wxEVT_SCROLL_LINEUP, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxSpinEventFunction) & func, NULL ),
 #define EVT_SPIN_DOWN(id, func) \
-    wxEventTableEntry( wxEVT_SCROLL_LINEDOWN, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxSpinEventFunction) & func ),
-#endif
-#ifndef EVT_SPIN
+    wxEventTableEntry( wxEVT_SCROLL_LINEDOWN, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxSpinEventFunction) & func, NULL ),
 #define EVT_SPIN(id, func) \
-    wxEventTableEntry( wxEVT_SCROLL_THUMBTRACK, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxSpinEventFunction) & func ),
-#endif
+    wxEventTableEntry( wxEVT_SCROLL_THUMBTRACK, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxSpinEventFunction) & func, NULL ),
 
 #endif // wxUSE_SPINBTN