diff --git a/src/libslic3r/Format/OBJ.cpp b/src/libslic3r/Format/OBJ.cpp
index e066925a98..10abe8e4de 100644
--- a/src/libslic3r/Format/OBJ.cpp
+++ b/src/libslic3r/Format/OBJ.cpp
@@ -10,6 +10,7 @@
 #include <string>
 
 #include <boost/log/trivial.hpp>
+#include <boost/nowide/fstream.hpp>
 
 #ifdef _WIN32
 #define DIR_SEPARATOR '\\'