diff --git a/scrapthechan/cli/scraper.py b/scrapthechan/cli/scraper.py
index fd58c43..e1c7ed9 100644
--- a/scrapthechan/cli/scraper.py
+++ b/scrapthechan/cli/scraper.py
@@ -17,7 +17,7 @@ __all__ = ["main"]
 
 
 USAGE = \
-"""Usage: scrapthechan [OPTIONS] (URL | IMAGEBOARD BOARD THREAD)
+f"""Usage: scrapthechan [OPTIONS] (URL | IMAGEBOARD BOARD THREAD)
 
 Options:
 \t-h,--help       -- print this help and exit;
@@ -34,7 +34,7 @@ Arguments:
 \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.
+Supported imageboards: {', '.join(SUPPORTED_IMAGEBOARDS)}.
 """