diff --git a/response.go b/response.go
index 1fef078d..96031fb6 100644
--- a/response.go
+++ b/response.go
@@ -69,7 +69,7 @@ func readResponse(br *bufio.Reader) (*Response, error) {
 
 func (res *Response) write(bw *bufio.Writer) error {
 	if res.Status == "" {
-		if status, ok := StatusMessages[res.StatusCode]; ok {
+		if status, ok := statusMessages[res.StatusCode]; ok {
 			res.Status = status
 		}
 	}
diff --git a/statusmessages.go b/statusmessages.go
index 8bb8bf57..6d3f9243 100644
--- a/statusmessages.go
+++ b/statusmessages.go
@@ -1,7 +1,6 @@
 package gortsplib
 
-// StatusMessages is a map that contains the strings associated with every status code.
-var StatusMessages = map[StatusCode]string{
+var statusMessages = map[StatusCode]string{
 	StatusContinue: "Continue",
 
 	StatusOK: "OK",