diff --git a/src/openrct2/core/Range.hpp b/src/openrct2/core/Range.hpp
index 318ed81587..49adfd9ee5 100644
--- a/src/openrct2/core/Range.hpp
+++ b/src/openrct2/core/Range.hpp
@@ -10,6 +10,7 @@
 #pragma once
 
 #include <cmath>
+#include <cstdlib>
 #include <type_traits>
 
 template<typename T>