diff --git a/main.go b/main.go
index 4ccc25b..1441ee2 100644
--- a/main.go
+++ b/main.go
@@ -32,8 +32,8 @@ func main() {
 
 	flagSet.String("http-address", "127.0.0.1:4180", "[http://]<addr>:<port> or unix://<path> to listen on for HTTP clients")
 	flagSet.String("https-address", ":443", "<addr>:<port> to listen on for HTTPS clients")
-	flagSet.String("tls-cert", "", "path to certificate file")
-	flagSet.String("tls-key", "", "path to private key file")
+	flagSet.String("tls-cert-file", "", "path to certificate file")
+	flagSet.String("tls-key-file", "", "path to private key file")
 	flagSet.String("redirect-url", "", "the OAuth Redirect URL. ie: \"https://internalapp.yourcompany.com/oauth2/callback\"")
 	flagSet.Bool("set-xauthrequest", false, "set X-Auth-Request-User and X-Auth-Request-Email response headers (useful in Nginx auth_request mode)")
 	flagSet.Var(&upstreams, "upstream", "the http url(s) of the upstream endpoint or file:// paths for static files. Routing is based on the path")