diff --git a/src/internal/math.h b/src/internal/math.h
index 28d93fb..c68f36f 100644
--- a/src/internal/math.h
+++ b/src/internal/math.h
@@ -2,6 +2,8 @@
 #define MATH_H
 
 #include "nurbs.h"
+#include <algorithm>
+#include <limits>
 
 namespace adsk
 {