diff --git a/README.md b/README.md
index 9b07055..5a91b97 100644
--- a/README.md
+++ b/README.md
@@ -72,9 +72,9 @@ u=http://localhost/cgi-bin/csaf_provider.go
 
 ## csaf_checker
 
-Provider checker is a tool for testing a CSAF trusted provider according to [Section 7 of the CSAF standard](https://docs.oasis-open.org/csaf/csaf/v2.0/csaf-v2.0.html#7-distributing-csaf-documents).
+Provider checker is a tool for testing a CSAF trusted provider according to [Section 7 of the CSAF standard](https://docs.oasis-open.org/csaf/csaf/v2.0/csaf-v2.0.html#7-distributing-csaf-documents).       
 Usage example:
-``` ./csaf_checker example.com -f html > check-results.html```
+``` ./csaf_checker example.com -f html -o check-results.html```
 
 ## License