diff --git a/libs/numpy/example/gaussian.cpp b/libs/numpy/example/gaussian.cpp
index c6cf2ebd..d0b47d77 100644
--- a/libs/numpy/example/gaussian.cpp
+++ b/libs/numpy/example/gaussian.cpp
@@ -1,8 +1,8 @@
+#include <boost/numpy.hpp>
+
 #include <cmath>
 #include <memory>
 
-#include <boost/numpy.hpp>
-
 namespace bp = boost::python;
 namespace bn = boost::numpy;