diff --git a/libs/kimath/include/math/box2.h b/libs/kimath/include/math/box2.h
index 7c0ce9008c..9e7bf85919 100644
--- a/libs/kimath/include/math/box2.h
+++ b/libs/kimath/include/math/box2.h
@@ -29,6 +29,7 @@
 
 #include <math/vector2d.h>
 #include <limits>
+#include <algorithm>
 
 // Needed for the OPT definition
 #include <core/optional.h>