diff --git a/hecl/include/hecl/SystemChar.hpp b/hecl/include/hecl/SystemChar.hpp
index ab1fa0a4b..c82d4cc9d 100644
--- a/hecl/include/hecl/SystemChar.hpp
+++ b/hecl/include/hecl/SystemChar.hpp
@@ -14,6 +14,8 @@
 #include <wchar.h>
 #endif
 #include <string>
+#include <string.h>
+#include <algorithm>
 
 namespace hecl
 {