diff --git a/doc/index.md b/doc/index.md
index 85bd9011..9b2ca947 100644
--- a/doc/index.md
+++ b/doc/index.md
@@ -4,7 +4,9 @@ These pages contain the API documentation of JSON for Modern C++, a C++11 header
 
 # Contents
 
-- @link nlohmann::basic_json `basic_json` class @endlink
+- Classes
+  - @link nlohmann::basic_json `basic_json`@endlink -- class template for JSON values
+  - @link nlohmann::json `json`@endlink -- the default specialization of `basic_json`, defined as `basic_json<>`
 - [Functions](functions_func.html)
   - object inspection
     - @link nlohmann::basic_json::dump dump @endlink -- value serialization