diff --git a/README.md b/README.md
index 256c0d3..1efbb82 100644
--- a/README.md
+++ b/README.md
@@ -3,15 +3,15 @@ justcaptcha ver. 2.0.0
 
 A simple CAPTCHA service implementation.
 
-## Usage
+## Service usage
 
-    justcaptchad -expiry 5m -listen /var/run/justcaptcha/c.sock
+    justcaptchad -expiry 10m -listen /var/run/justcaptcha/sock
 
 `-expiry` takes time for CAPTCHA to be valid for in format X{s,m,h}.
 
 `-listen` is `ip:port` or `/path/to/unix.sock` to listen on.
 
-## API
+## Service HTTP API
 
 ### Errors
 
@@ -33,7 +33,7 @@ It will return an ID of a new CAPTCHA in `text/plain`.
 Responds with an image in JPEG format (`image/jpeg`).
 
 An optional URL parameter `style=` set a name of a CAPTCHA style if it is
-implemented by used CAPTCHA implementation.
+supported by CAPTCHA implementation.
 
 #### HTTP codes
 - `200` if exists