diff --git a/generator/mpegts_generator.go b/generator/mpegts_generator.go
index 88d129fb..0147a7f2 100644
--- a/generator/mpegts_generator.go
+++ b/generator/mpegts_generator.go
@@ -51,8 +51,8 @@ func init() {
 }
 
 const (
-	SdtPid    = 17
-	PatPid    = 0
+	sdtPid    = 17
+	patPid    = 0
 	pmtPid    = 4096
 	videoPid  = 256
 	streamID  = 0xe0
@@ -79,8 +79,7 @@ func NewTsGenerator(fps float64) (g *tsGenerator) {
 		fps:            fps,
 		currentPtsTime: ptsOffset,
 		continuity: map[int]byte{
-			SdtPid:   0, // FIXME(kortschak): This is not used.
-			PatPid:   0,
+			patPid:   0,
 			pmtPid:   0,
 			videoPid: 0,
 		},
@@ -139,8 +138,8 @@ func (g *tsGenerator) generate() {
 				// Create pat table
 				patPkt := mpegts.Packet{
 					PUSI:    pusi,
-					PID:     PatPid,
-					CC:      g.ccFor(PatPid),
+					PID:     patPid,
+					CC:      g.ccFor(patPid),
 					AFC:     1,
 					Payload: patTable,
 				}