diff --git a/src/html/htmlwin.cpp b/src/html/htmlwin.cpp
index 1af6efb59d..1b67f52cf5 100644
--- a/src/html/htmlwin.cpp
+++ b/src/html/htmlwin.cpp
@@ -33,6 +33,7 @@
 #include "wx/html/htmlproc.h"
 #include "wx/list.h"
 #include "wx/clipbrd.h"
+#include "wx/dataobj.h"
 #include "wx/timer.h"
 #include "wx/dcmemory.h"