diff --git a/include/fmt/core.h b/include/fmt/core.h
index dc4d2faa..286d6a7f 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -1,4 +1,4 @@
-// Formatting library for C++ - the core API
+// Formatting library for C++ - the core API for char/UTF-8
 //
 // Copyright (c) 2012 - present, Victor Zverovich
 // All rights reserved.