diff --git a/Reflection/Enum.h b/Reflection/Enum.h
index f91106c81..890032062 100644
--- a/Reflection/Enum.h
+++ b/Reflection/Enum.h
@@ -9,6 +9,7 @@
 #ifndef Enum_h
 #define Enum_h
 
+#include <algorithm>
 #include <cctype>
 #include <string>
 #include <typeindex>