diff --git a/thirdparty/clipper2/Clipper2Lib/include/clipper2/clipper.core.h b/thirdparty/clipper2/Clipper2Lib/include/clipper2/clipper.core.h
index 59ca9fd396..5afd385fa3 100644
--- a/thirdparty/clipper2/Clipper2Lib/include/clipper2/clipper.core.h
+++ b/thirdparty/clipper2/Clipper2Lib/include/clipper2/clipper.core.h
@@ -10,7 +10,6 @@
 #ifndef CLIPPER_CORE_H
 #define CLIPPER_CORE_H
 
-#include <cstdint>
 #include <cstdlib>
 #include <cmath>
 #include <vector>