diff --git a/protocol/rtsp/client.go b/protocol/rtsp/client.go
index 133adf38..7f6ac45e 100644
--- a/protocol/rtsp/client.go
+++ b/protocol/rtsp/client.go
@@ -113,8 +113,8 @@ func (c *Client) Play() (*Response, error) {
 
 // Do sends the given RTSP request r and reads any responses, return the response
 // and any errors.
-func (c *Client) Do(r *Request) (*Response, error) {
-	err := r.Write(c.conn)
+func (c *Client) Do(req *Request) (*Response, error) {
+	err := req.Write(c.conn)
 	if err != nil {
 		return nil, err
 	}