diff --git a/src/core/math_func.hpp b/src/core/math_func.hpp
index 8faa67c11c..e68573a811 100644
--- a/src/core/math_func.hpp
+++ b/src/core/math_func.hpp
@@ -177,7 +177,7 @@ static inline int32 ClampToI32(const int64 a)
  */
 static inline uint16 ClampToU16(const uint64 a)
 {
-	return min(a, UINT16_MAX);
+	return min(a, 0xFFFF);
 }
 
 /**