diff --git a/protocol/rtsp/rtsp.go b/protocol/rtsp/rtsp.go
index 605057ff..eba7f20f 100644
--- a/protocol/rtsp/rtsp.go
+++ b/protocol/rtsp/rtsp.go
@@ -141,12 +141,18 @@ func ReadResponse(r io.Reader) (*Response, error) {
 	}
 
 	var proto string
-	fmt.Sscanf(s, "%s %d %s", &proto, &resp.StatusCode, &resp.Status)
+	_, err = fmt.Sscanf(s, "%s %d %s", &proto, &resp.StatusCode, &resp.Status)
+	if err != nil {
+		return nil, err
+	}
 
 	s1 := strings.Split(proto, "/")
 	resp.Proto = s1[0]
 
-	fmt.Sscanf(s1[1], "%d.%d", &resp.ProtoMajor, &resp.ProtoMinor)
+	_, err = fmt.Sscanf(s1[1], "%d.%d", &resp.ProtoMajor, &resp.ProtoMinor)
+	if err != nil {
+		return nil, err
+	}
 
 	// Read headers.
 	for {