diff --git a/container/mts/mpegts.go b/container/mts/mpegts.go
index 484254fe..0b356770 100644
--- a/container/mts/mpegts.go
+++ b/container/mts/mpegts.go
@@ -419,10 +419,12 @@ func GetPTSRange(clip []byte, pid uint16) (pts [2]uint64, err error) {
 	return
 }
 
-var errNoPesPayload = errors.New("no PES payload")
-var errNoPesPTS = errors.New("no PES PTS")
-var errInvalidPesHeader = errors.New("invalid PES header")
-var errInvalidPesPayload = errors.New("invalid PES payload")
+var (
+	errNoPesPayload = errors.New("no PES payload")
+	errNoPesPTS = errors.New("no PES PTS")
+	errInvalidPesHeader = errors.New("invalid PES header")
+	errInvalidPesPayload = errors.New("invalid PES payload")
+)
 
 // GetPTS returns a PTS from a packet that has PES payload, or an error otherwise.
 func GetPTS(pkt []byte) (pts int64, err error) {