diff --git a/cmd/csaf_checker/main.go b/cmd/csaf_checker/main.go
index 41203df..e4dde11 100644
--- a/cmd/csaf_checker/main.go
+++ b/cmd/csaf_checker/main.go
@@ -32,7 +32,7 @@ type options struct {
 	ClientCert *string  `long:"client-cert" description:"TLS client certificate file (PEM encoded data)" value-name:"CERT-FILE"`
 	ClientKey  *string  `long:"client-key" description:"TLS client private key file (PEM encoded data)" value-name:"KEY-FILE"`
 	Version    bool     `long:"version" description:"Display version of the binary"`
-	Rate       *float64 `long:"rate" short:"t"`
+	Rate       *float64 `long:"rate" short:"r" description:"The average upper limit of https operations per second"`
 }
 
 func errCheck(err error) {