diff --git a/README.md b/README.md
index eaf8662..e97879f 100644
--- a/README.md
+++ b/README.md
@@ -113,7 +113,7 @@ cat index.html | monolith -aIiFfcMv -b https://original.site/ - > result.html
  - `-b`: Use custom `base URL`
  - `-c`: Exclude CSS
  - `-C`: Save document using custom `charset`
- - `-D`: Allow retrieving assets only from specified `domains`
+ - `-D`: Allow retrieving assets only from specified `domain(s)`
  - `-e`: Ignore network errors
  - `-E`: Exclude all assets located within domains specified in whitelist
  - `-f`: Omit frames