diff --git a/modules/ripple_basics/ripple_basics.cpp b/modules/ripple_basics/ripple_basics.cpp
index f808b9c92..b0706c7d4 100644
--- a/modules/ripple_basics/ripple_basics.cpp
+++ b/modules/ripple_basics/ripple_basics.cpp
@@ -28,7 +28,6 @@
 
 #include <boost/algorithm/string.hpp>
 #include <boost/date_time/posix_time/posix_time.hpp>
-#include <boost/lexical_cast.hpp>
 #include <boost/test/unit_test.hpp>
 #include <boost/asio.hpp> // for stupid parseIpPort
 #include <boost/regex.hpp>
diff --git a/modules/ripple_basics/ripple_basics.h b/modules/ripple_basics/ripple_basics.h
index 1cc447643..a93f42358 100644
--- a/modules/ripple_basics/ripple_basics.h
+++ b/modules/ripple_basics/ripple_basics.h
@@ -81,6 +81,7 @@ namespace boost {
 
 // StringUtilities
 #include <boost/format.hpp>
+#include <boost/lexical_cast.hpp>