diff --git a/include/wx/generic/sashwin.h b/include/wx/generic/sashwin.h
index 81fcdf1b88..2e90124cc7 100644
--- a/include/wx/generic/sashwin.h
+++ b/include/wx/generic/sashwin.h
@@ -193,7 +193,11 @@ private:
 DECLARE_EVENT_TABLE()
 };
 
-#define wxEVT_SASH_DRAGGED (wxEVT_FIRST + 1200)
+BEGIN_DECLARE_EVENT_TYPES()
+    DECLARE_EVENT_TYPE(wxEVT_SASH_DRAGGED, wxEVT_FIRST + 1200)
+END_DECLARE_EVENT_TYPES()
+
+// #define wxEVT_SASH_DRAGGED (wxEVT_FIRST + 1200)
 
 enum wxSashDragStatus
 {
diff --git a/src/generic/sashwin.cpp b/src/generic/sashwin.cpp
index f567e1113d..1b64276b86 100644
--- a/src/generic/sashwin.cpp
+++ b/src/generic/sashwin.cpp
@@ -36,6 +36,8 @@
 #include "wx/sashwin.h"
 #include "wx/laywin.h"
 
+DEFINE_EVENT_TYPE(wxEVT_SASH_DRAGGED)
+
 IMPLEMENT_DYNAMIC_CLASS(wxSashWindow, wxWindow)
 IMPLEMENT_DYNAMIC_CLASS(wxSashEvent, wxCommandEvent)