diff --git a/xs/src/slic3r/Utils/Serial.cpp b/xs/src/slic3r/Utils/Serial.cpp
index fa0d52454..156828e53 100644
--- a/xs/src/slic3r/Utils/Serial.cpp
+++ b/xs/src/slic3r/Utils/Serial.cpp
@@ -1,8 +1,6 @@
 #include "Serial.hpp"
 
 #include <algorithm>
-#include <string>
-#include <vector>
 
 #include <boost/algorithm/string/predicate.hpp>
 
diff --git a/xs/src/slic3r/Utils/Serial.hpp b/xs/src/slic3r/Utils/Serial.hpp
index 1b023afc8..9381ab398 100644
--- a/xs/src/slic3r/Utils/Serial.hpp
+++ b/xs/src/slic3r/Utils/Serial.hpp
@@ -3,6 +3,8 @@
 
 #include <memory>
 #include <vector>
+#include <string>
+#include <vector>
 
 namespace Slic3r {
 namespace Utils {