diff --git a/src/one-body-sample.cc b/src/one-body-sample.cc
index 89c67b8718a7117464449c599bcfcc65cad451c7..ba0e7d1c3f7b3179446e7c429828feef47f2c921 100644
--- a/src/one-body-sample.cc
+++ b/src/one-body-sample.cc
@@ -13,7 +13,7 @@
 #include <exception>
 #include <iostream>
 
-#include "boost/format.hpp"
+#include <boost/format.hpp>
 
 #include <cmath>