diff --git a/include/wx/aui/tabmdi.h b/include/wx/aui/tabmdi.h
index cf0d4b9a59..f7a1534074 100644
--- a/include/wx/aui/tabmdi.h
+++ b/include/wx/aui/tabmdi.h
@@ -21,6 +21,7 @@
 #include "wx/frame.h"
 #include "wx/panel.h"
 #include "wx/notebook.h"
+#include "wx/icon.h"
 #include "wx/aui/auibook.h"
 
 //-----------------------------------------------------------------------------