diff --git a/include/wx/init.h b/include/wx/init.h
index 7cdcda57f8..8ceae027c8 100644
--- a/include/wx/init.h
+++ b/include/wx/init.h
@@ -12,6 +12,7 @@
 #ifndef _WX_INIT_H_
 #define _WX_INIT_H_
 
+#include "wx/defs.h"
 #include "wx/wxchar.h"
 
 // ----------------------------------------------------------------------------