diff --git a/src/msw/data.cpp b/src/msw/data.cpp
index 214436ae31..9054924ba6 100644
--- a/src/msw/data.cpp
+++ b/src/msw/data.cpp
@@ -22,6 +22,7 @@
 
 #ifndef WX_PRECOMP
 #include "wx/wx.h"
+#include "wx/treectrl.h"
 #endif
 
 #include "wx/prntbase.h"