diff --git a/intern/locale/boost_locale_wrapper.cpp b/intern/locale/boost_locale_wrapper.cpp
index fb0e194..8456656 100644
--- a/intern/locale/boost_locale_wrapper.cpp
+++ b/intern/locale/boost_locale_wrapper.cpp
@@ -7,6 +7,7 @@
 
 #include <boost/locale.hpp>
 #include <stdio.h>
+#include <iostream>
 
 #include "boost_locale_wrapper.h"