diff --git a/src/include/jessilib/unicode.hpp b/src/include/jessilib/unicode.hpp
index 5b2897b..b399241 100644
--- a/src/include/jessilib/unicode.hpp
+++ b/src/include/jessilib/unicode.hpp
@@ -19,6 +19,7 @@
 #pragma once
 
 #include <cuchar>
+#include <climits>
 #include "unicode_compare.hpp"
 
 namespace jessilib {