diff --git a/Frontend/README.md b/Frontend/README.md
index 1e672a4..3a9b0e0 100644
--- a/Frontend/README.md
+++ b/Frontend/README.md
@@ -79,7 +79,7 @@ This name allows to have readable code sending data to parent module:
  - Functions ought to have descriptive name
  - Ought to do one thing. ie. function sendRequest should send request, but not prepare request body or process response data
  - In practice, if function has more than 10 SLoC, it probably should be split
- - DO NOT use "any" type. Just don't.
+ - DO NOT use "any" type. Just don't. *Optional
  - Function used in other function should be placed below it (if possible, as function can be called from many places in the code)
 
 #### Rules regarding variables and refs: