diff --git a/src/libslic3r/Format/3mf.hpp b/src/libslic3r/Format/3mf.hpp
index 9509b2c704..c46b4e5533 100644
--- a/src/libslic3r/Format/3mf.hpp
+++ b/src/libslic3r/Format/3mf.hpp
@@ -1,6 +1,6 @@
 #ifndef slic3r_Format_3mf_hpp_
 #define slic3r_Format_3mf_hpp_
-#include "../expat.h"
+#include <expat.h>
 
 namespace Slic3r {
 // PrusaFileParser is used to check 3mf file is from Prusa