diff --git a/src/libslic3r/Format/3mf.cpp b/src/libslic3r/Format/3mf.cpp
index 7a066f255..6af34f38e 100644
--- a/src/libslic3r/Format/3mf.cpp
+++ b/src/libslic3r/Format/3mf.cpp
@@ -19,8 +19,6 @@
 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/algorithm/string/replace.hpp>
 #include <boost/filesystem/operations.hpp>
-#include <boost/nowide/fstream.hpp>
-#include <boost/nowide/cstdio.hpp>
 #include <boost/spirit/include/karma.hpp>
 
 #include <boost/property_tree/ptree.hpp>
diff --git a/src/libslic3r/Format/PRUS.cpp b/src/libslic3r/Format/PRUS.cpp
index e2c38d957..abf30a53b 100644
--- a/src/libslic3r/Format/PRUS.cpp
+++ b/src/libslic3r/Format/PRUS.cpp
@@ -2,8 +2,6 @@
 #include <exception>
 
 #include <boost/algorithm/string.hpp>
-#include <boost/nowide/convert.hpp>
-#include <boost/nowide/cstdio.hpp>
 
 #include "miniz_extension.hpp"
 
diff --git a/src/slic3r/GUI/3DScene.cpp b/src/slic3r/GUI/3DScene.cpp
index ddfbca436..3aafc9a3b 100644
--- a/src/slic3r/GUI/3DScene.cpp
+++ b/src/slic3r/GUI/3DScene.cpp
@@ -34,8 +34,6 @@
 #include <boost/filesystem/operations.hpp>
 #include <boost/algorithm/string/predicate.hpp>
 
-#include <boost/nowide/cstdio.hpp>
-
 #include <Eigen/Dense>
 
 #ifdef HAS_GLSAFE
diff --git a/src/slic3r/GUI/BedShapeDialog.cpp b/src/slic3r/GUI/BedShapeDialog.cpp
index 781838233..0a10f4753 100644
--- a/src/slic3r/GUI/BedShapeDialog.cpp
+++ b/src/slic3r/GUI/BedShapeDialog.cpp
@@ -12,7 +12,6 @@
 #include "libslic3r/Model.hpp"
 #include "libslic3r/Polygon.hpp"
 
-#include "boost/nowide/iostream.hpp"
 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/filesystem.hpp>