diff --git a/src/slic3r/Utils/Http.cpp b/src/slic3r/Utils/Http.cpp
index b5997b710c..3f31e0e10a 100644
--- a/src/slic3r/Utils/Http.cpp
+++ b/src/slic3r/Utils/Http.cpp
@@ -11,6 +11,7 @@
 #include <boost/filesystem.hpp>
 #include <boost/format.hpp>
 #include <boost/log/trivial.hpp>
+#include <boost/algorithm/string.hpp>
 
 #include <curl/curl.h>