diff --git a/xs/src/libslic3r/ClipperUtils.hpp b/xs/src/libslic3r/ClipperUtils.hpp

index ddd551c..8149366 100644

--- a/xs/src/libslic3r/ClipperUtils.hpp

+++ b/xs/src/libslic3r/ClipperUtils.hpp

@@ -2,7 +2,7 @@

 #define slic3r_ClipperUtils_hpp_

 #include <libslic3r.h>

-#include "clipper.hpp"

+#include <polyclipping/clipper.hpp>

 #include "ExPolygon.hpp"

 #include "Polygon.hpp"

 #include "Surface.hpp"

diff --git a/xs/src/libslic3r/Geometry.cpp b/xs/src/libslic3r/Geometry.cpp

index 7bcb644..5258485 100644

--- a/xs/src/libslic3r/Geometry.cpp

+++ b/xs/src/libslic3r/Geometry.cpp

@@ -3,7 +3,7 @@

 #include "ExPolygon.hpp"

 #include "Line.hpp"

 #include "PolylineCollection.hpp"

-#include "clipper.hpp"

+#include <polyclipping/clipper.hpp>

 #include <algorithm>

 #include <cassert>

 #include <cmath>

diff --git a/xs/src/libslic3r/SVG.hpp b/xs/src/libslic3r/SVG.hpp

index fbb5e37..bb9f4cc 100644

--- a/xs/src/libslic3r/SVG.hpp

+++ b/xs/src/libslic3r/SVG.hpp

@@ -2,7 +2,7 @@

 #define slic3r_SVG_hpp_

 #include "libslic3r.h"

-#include "clipper.hpp"

+#include <polyclipping/clipper.hpp>

 #include "ExPolygon.hpp"

 #include "Line.hpp"

 #include "TriangleMesh.hpp"

diff --git a/xs/xsp/Clipper.xsp b/xs/xsp/Clipper.xsp

index 7bbbdb8..8b52133 100644

--- a/xs/xsp/Clipper.xsp

+++ b/xs/xsp/Clipper.xsp

@@ -2,7 +2,7 @@

 %{

 #include <xsinit.h>

-#include "clipper.hpp"

+#include <polyclipping/clipper.hpp>

 #include "libslic3r/ClipperUtils.hpp"

 %}