diff --git a/src/msw/notebook.cpp b/src/msw/notebook.cpp
index 793d0dd8d7..333a22bfc9 100644
--- a/src/msw/notebook.cpp
+++ b/src/msw/notebook.cpp
@@ -30,6 +30,7 @@
     #include "wx/dcclient.h"
     #include "wx/dcmemory.h"
     #include "wx/control.h"
+    #include "wx/panel.h"
 #endif  // WX_PRECOMP
 
 #include "wx/imaglist.h"