diff --git a/include/wx/vector.h b/include/wx/vector.h
index 9511ab2ab3..9de3d72467 100644
--- a/include/wx/vector.h
+++ b/include/wx/vector.h
@@ -21,6 +21,8 @@
 
 #else // !wxUSE_STL
 
+#include "wx/utils.h"
+
 #include "wx/beforestd.h"
 #include <new> // for placement new
 #include "wx/afterstd.h"