diff --git a/src/FlightCrew/Validators/SaxSchemaValidator.cpp b/src/FlightCrew/Validators/SaxSchemaValidator.cpp
index 5958883..7513512 100644
--- a/src/FlightCrew/Validators/SaxSchemaValidator.cpp
+++ b/src/FlightCrew/Validators/SaxSchemaValidator.cpp
@@ -19,6 +19,7 @@
 **
 *************************************************************************/
 
+#include <boost/scoped_ptr.hpp>
 #include <stdafx.h>
 #include "SaxSchemaValidator.h"
 #include "Misc/ErrorResultCollector.h"