diff --git a/README.md b/README.md
index 04ac0e7..63afbfd 100644
--- a/README.md
+++ b/README.md
@@ -78,8 +78,8 @@ Arguments:
 - `--channels`: path to list of channels (can be specified via config file)
 - `--lang`: set default language for all programs (default: 'en')
 - `--days`: number of days for which to grab the program (default: 1)
-- `--delay`: delay between requests (default: 3000)
-- `--timeout`: set a timeout for each request (default: 5000)
+- `--delay`: delay between requests in milliseconds (default: 3000)
+- `--timeout`: set a timeout for each request in milliseconds (default: 5000)
 - `--cache-ttl`: maximum time for storing each request in milliseconds (default: 0)
 - `--gzip`: compress the output (default: false)
 - `--debug`: enable debug mode (default: false)