diff --git a/src/json/json_spirit_value.h b/src/json/json_spirit_value.h
index 88c0e1f73..13cc89210 100644
--- a/src/json/json_spirit_value.h
+++ b/src/json/json_spirit_value.h
@@ -16,6 +16,7 @@
 #include <cassert>
 #include <sstream>
 #include <stdexcept>
+#include <stdint.h>
 #include <boost/config.hpp> 
 #include <boost/shared_ptr.hpp> 
 #include <boost/variant.hpp>