diff --git a/scrapthechan/cli/scraper.py b/scrapthechan/cli/scraper.py
index db56f63..c52f900 100644
--- a/scrapthechan/cli/scraper.py
+++ b/scrapthechan/cli/scraper.py
@@ -16,7 +16,7 @@ __all__ = ["main"]
 
 
 USAGE = \
-"""Usage: scrapthechan [OPTIONS] (URL|)
+"""Usage: scrapthechan [OPTIONS] (URL | IMAGEBOARD BOARD THREAD)
 
 Options:
 \t-h,--help       -- print this help and exit;
@@ -27,7 +27,13 @@ Options:
 \t-N,--no-op      -- by default OP's post will be written in !op.txt file. This
 \t                   option disables this behaviour;
 
-Supported imageboards: 4chan.org, 2ch.hk, lainchan.org
+Arguments:
+\tURL        -- URL of a thread;
+\tIMAGEBOARD -- name of a imageboard. E.g. 4chan;
+\tBOARD      -- short name of a board. E.g. b;
+\tTHREAD     -- ID of a thread. E.g. 100500.
+
+Supported imageboards: 4chan.org, 2ch.hk, lainchan.org.
 """