diff --git a/include/wx/msw/wave.h b/include/wx/msw/wave.h
index 80426fc0bd..4fc3dc71e9 100644
--- a/include/wx/msw/wave.h
+++ b/include/wx/msw/wave.h
@@ -18,7 +18,7 @@
 
 #include "wx/object.h"
 
-class wxWave : public wxObject
+class DLLEXPORT wxWave : public wxObject
 {
 public:
   wxWave();