diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp
index 72fb82f694..93d8ed9709 100644
--- a/src/common/sizer.cpp
+++ b/src/common/sizer.cpp
@@ -31,6 +31,7 @@
 #include "wx/statbox.h"
 #include "wx/settings.h"
 #include "wx/listimpl.cpp"
+#include "wx/intl.h"
 #if WXWIN_COMPATIBILITY_2_4
     #include "wx/notebook.h"
 #endif