diff --git a/xs/src/libslic3r/libslic3r.h b/xs/src/libslic3r/libslic3r.h
index 0b91f55ccd..5da4ccdb01 100644
--- a/xs/src/libslic3r/libslic3r.h
+++ b/xs/src/libslic3r/libslic3r.h
@@ -6,7 +6,7 @@
 #include <iostream>
 #include <sstream>
 #include <cstdio>
-#include <cstdint>
+#include <stdint.h>
 #include <stdarg.h>
 
 #define SLIC3R_VERSION "1.3.0-dev"