diff --git a/README.md b/README.md
index dabc1ef..98cb1a2 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ python script/spider.py -c config/prod.cfg -u googledrive -s firebase -n gmail
 
 ### Other options
 ```bash
-# download all format
+# download all formats
 python script/spider.py --config config/prod.cfg --all
 
 # download only one format: pdf|epub|mobi