diff --git a/README.md b/README.md
index 8c85854..612ef07 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,8 @@
 minimal scheme dialect implementation written in ISO C11 meant to be used
 to write interpreters and compilers (that can therefore be easily bootstrapped).
 
+This implementation is only an hobby and should be not taken seriously at all.
+
 ## How to build
 
 This project uses **GNU Make**, in order to build it, run in your shell:
@@ -13,7 +15,7 @@ This project uses **GNU Make**, in order to build it, run in your shell:
 
 Here is a list of features that are planned:
 
-* Input source code can be encoded in UTF-8, but identifiers are very limited (cfr. `src/parser.c`)
+* Only ASCII is supported (for the full grammar check `src/parser.c`)
 * There are only integers (probably int64_t) and integer arithmetic
 * **box** primitive datatype, being the only one that allows mutation, all the other values are immutable
 * First class functions