diff --git a/stream/mts/encoder.go b/stream/mts/encoder.go
index 8e43242f..abbc0fac 100644
--- a/stream/mts/encoder.go
+++ b/stream/mts/encoder.go
@@ -38,7 +38,7 @@ import (
 
 // Some common manifestations of PSI
 var (
-	// PSI struct to represent basic pat.
+	// PSI struct to represent basic PAT.
 	StandardPat = psi.PSI{
 		Pf:  0x00,
 		Tid: 0x00,
@@ -58,7 +58,7 @@ var (
 		},
 	}
 
-	// PSI struct to represent basic pmt without descriptors for time and location.
+	// PSI struct to represent basic PMT without descriptors for time and location.
 	StandardPmt = psi.PSI{
 		Pf:  0x00,
 		Tid: 0x02,
@@ -71,7 +71,7 @@ var (
 			Sn:   0,
 			Lsn:  0,
 			Sd: &psi.PMT{
-				Pcrpid: 0x0100, // wrong
+				Pcrpid: 0x0100,
 				Pil:    0,
 				Essd: &psi.ESSD{
 					St:   0x1b,
@@ -82,7 +82,7 @@ var (
 		},
 	}
 
-	// Std pmt with time and location descriptors, time and location fields are zeroed out.
+	// Standard PMT with time and location descriptors, time and location fields are zeroed out.
 	StandardPmtTimeLocation = psi.PSI{
 		Pf:  0x00,
 		Tid: 0x02,