diff --git a/src/cpp/ripple/RippleAddress.cpp b/src/cpp/ripple/RippleAddress.cpp
index 7ef204277..e2c0efcfa 100644
--- a/src/cpp/ripple/RippleAddress.cpp
+++ b/src/cpp/ripple/RippleAddress.cpp
@@ -1,3 +1,4 @@
+#include <boost/asio.hpp>
 #include "RippleAddress.h"
 
 #include <algorithm>