diff --git a/src/common/ffile.cpp b/src/common/ffile.cpp
index 3422506621..d34756376a 100644
--- a/src/common/ffile.cpp
+++ b/src/common/ffile.cpp
@@ -31,6 +31,10 @@
     #include "wx/log.h"
 #endif
 
+#ifdef __WINDOWS__
+#include "wx/msw/mslu.h"
+#endif
+
 #include "wx/ffile.h"
 
 // ============================================================================