diff --git a/reader.go b/reader.go
index 9deee4f0..84b6827c 100644
--- a/reader.go
+++ b/reader.go
@@ -315,7 +315,7 @@ func decodeLineOfMasterPlaylist(p *MasterPlaylist, state *decodingState, line st
 			case "VIDEO-RANGE":
 				state.variant.VideoRange = v
 			case "HDCP-LEVEL":
-				state.variant.HCDPLevel = v
+				state.variant.HDCPLevel = v
 			}
 		}
 	case state.tagStreamInf && !strings.HasPrefix(line, "#"):
@@ -366,7 +366,7 @@ func decodeLineOfMasterPlaylist(p *MasterPlaylist, state *decodingState, line st
 			case "VIDEO-RANGE":
 				state.variant.VideoRange = v
 			case "HDCP-LEVEL":
-				state.variant.HCDPLevel = v
+				state.variant.HDCPLevel = v
 			}
 		}
 	case strings.HasPrefix(line, "#"): // unknown tags treated as comments
diff --git a/reader_test.go b/reader_test.go
index ab09c13d..885e7d28 100644
--- a/reader_test.go
+++ b/reader_test.go
@@ -245,24 +245,24 @@ func TestDecodeMasterWithHLSV7(t *testing.T) {
 	}
 	var unexpected []*Variant
 	expected := map[string]VariantParams{
-		"sdr_720/prog_index.m3u8":      {Bandwidth: 3971374, AverageBandwidth: 2778321, Codecs: "hvc1.2.4.L123.B0", Resolution: "1280x720", Captions: "NONE", VideoRange: "SDR", HCDPLevel: "NONE", FrameRate: 23.976},
-		"sdr_1080/prog_index.m3u8":     {Bandwidth: 10022043, AverageBandwidth: 6759875, Codecs: "hvc1.2.4.L123.B0", Resolution: "1920x1080", Captions: "NONE", VideoRange: "SDR", HCDPLevel: "TYPE-0", FrameRate: 23.976},
-		"sdr_2160/prog_index.m3u8":     {Bandwidth: 28058971, AverageBandwidth: 20985770, Codecs: "hvc1.2.4.L150.B0", Resolution: "3840x2160", Captions: "NONE", VideoRange: "SDR", HCDPLevel: "TYPE-1", FrameRate: 23.976},
-		"dolby_720/prog_index.m3u8":    {Bandwidth: 5327059, AverageBandwidth: 3385450, Codecs: "dvh1.05.01", Resolution: "1280x720", Captions: "NONE", VideoRange: "PQ", HCDPLevel: "NONE", FrameRate: 23.976},
-		"dolby_1080/prog_index.m3u8":   {Bandwidth: 12876596, AverageBandwidth: 7999361, Codecs: "dvh1.05.03", Resolution: "1920x1080", Captions: "NONE", VideoRange: "PQ", HCDPLevel: "TYPE-0", FrameRate: 23.976},
-		"dolby_2160/prog_index.m3u8":   {Bandwidth: 30041698, AverageBandwidth: 24975091, Codecs: "dvh1.05.06", Resolution: "3840x2160", Captions: "NONE", VideoRange: "PQ", HCDPLevel: "TYPE-1", FrameRate: 23.976},
-		"hdr10_720/prog_index.m3u8":    {Bandwidth: 5280654, AverageBandwidth: 3320040, Codecs: "hvc1.2.4.L123.B0", Resolution: "1280x720", Captions: "NONE", VideoRange: "PQ", HCDPLevel: "NONE", FrameRate: 23.976},
-		"hdr10_1080/prog_index.m3u8":   {Bandwidth: 12886714, AverageBandwidth: 7964551, Codecs: "hvc1.2.4.L123.B0", Resolution: "1920x1080", Captions: "NONE", VideoRange: "PQ", HCDPLevel: "TYPE-0", FrameRate: 23.976},
-		"hdr10_2160/prog_index.m3u8":   {Bandwidth: 29983769, AverageBandwidth: 24833402, Codecs: "hvc1.2.4.L150.B0", Resolution: "3840x2160", Captions: "NONE", VideoRange: "PQ", HCDPLevel: "TYPE-1", FrameRate: 23.976},
-		"sdr_720/iframe_index.m3u8":    {Bandwidth: 593626, AverageBandwidth: 248586, Codecs: "hvc1.2.4.L123.B0", Resolution: "1280x720", Iframe: true, VideoRange: "SDR", HCDPLevel: "NONE"},
-		"sdr_1080/iframe_index.m3u8":   {Bandwidth: 956552, AverageBandwidth: 399790, Codecs: "hvc1.2.4.L123.B0", Resolution: "1920x1080", Iframe: true, VideoRange: "SDR", HCDPLevel: "TYPE-0"},
-		"sdr_2160/iframe_index.m3u8":   {Bandwidth: 1941397, AverageBandwidth: 826971, Codecs: "hvc1.2.4.L150.B0", Resolution: "3840x2160", Iframe: true, VideoRange: "SDR", HCDPLevel: "TYPE-1"},
-		"dolby_720/iframe_index.m3u8":  {Bandwidth: 573073, AverageBandwidth: 232253, Codecs: "dvh1.05.01", Resolution: "1280x720", Iframe: true, VideoRange: "PQ", HCDPLevel: "NONE"},
-		"dolby_1080/iframe_index.m3u8": {Bandwidth: 905037, AverageBandwidth: 365337, Codecs: "dvh1.05.03", Resolution: "1920x1080", Iframe: true, VideoRange: "PQ", HCDPLevel: "TYPE-0"},
-		"dolby_2160/iframe_index.m3u8": {Bandwidth: 1893236, AverageBandwidth: 739114, Codecs: "dvh1.05.06", Resolution: "3840x2160", Iframe: true, VideoRange: "PQ", HCDPLevel: "TYPE-1"},
-		"hdr10_720/iframe_index.m3u8":  {Bandwidth: 572673, AverageBandwidth: 232511, Codecs: "hvc1.2.4.L123.B0", Resolution: "1280x720", Iframe: true, VideoRange: "PQ", HCDPLevel: "NONE"},
-		"hdr10_1080/iframe_index.m3u8": {Bandwidth: 905053, AverageBandwidth: 364552, Codecs: "hvc1.2.4.L123.B0", Resolution: "1920x1080", Iframe: true, VideoRange: "PQ", HCDPLevel: "TYPE-0"},
-		"hdr10_2160/iframe_index.m3u8": {Bandwidth: 1895477, AverageBandwidth: 739757, Codecs: "hvc1.2.4.L150.B0", Resolution: "3840x2160", Iframe: true, VideoRange: "PQ", HCDPLevel: "TYPE-1"},
+		"sdr_720/prog_index.m3u8":      {Bandwidth: 3971374, AverageBandwidth: 2778321, Codecs: "hvc1.2.4.L123.B0", Resolution: "1280x720", Captions: "NONE", VideoRange: "SDR", HDCPLevel: "NONE", FrameRate: 23.976},
+		"sdr_1080/prog_index.m3u8":     {Bandwidth: 10022043, AverageBandwidth: 6759875, Codecs: "hvc1.2.4.L123.B0", Resolution: "1920x1080", Captions: "NONE", VideoRange: "SDR", HDCPLevel: "TYPE-0", FrameRate: 23.976},
+		"sdr_2160/prog_index.m3u8":     {Bandwidth: 28058971, AverageBandwidth: 20985770, Codecs: "hvc1.2.4.L150.B0", Resolution: "3840x2160", Captions: "NONE", VideoRange: "SDR", HDCPLevel: "TYPE-1", FrameRate: 23.976},
+		"dolby_720/prog_index.m3u8":    {Bandwidth: 5327059, AverageBandwidth: 3385450, Codecs: "dvh1.05.01", Resolution: "1280x720", Captions: "NONE", VideoRange: "PQ", HDCPLevel: "NONE", FrameRate: 23.976},
+		"dolby_1080/prog_index.m3u8":   {Bandwidth: 12876596, AverageBandwidth: 7999361, Codecs: "dvh1.05.03", Resolution: "1920x1080", Captions: "NONE", VideoRange: "PQ", HDCPLevel: "TYPE-0", FrameRate: 23.976},
+		"dolby_2160/prog_index.m3u8":   {Bandwidth: 30041698, AverageBandwidth: 24975091, Codecs: "dvh1.05.06", Resolution: "3840x2160", Captions: "NONE", VideoRange: "PQ", HDCPLevel: "TYPE-1", FrameRate: 23.976},
+		"hdr10_720/prog_index.m3u8":    {Bandwidth: 5280654, AverageBandwidth: 3320040, Codecs: "hvc1.2.4.L123.B0", Resolution: "1280x720", Captions: "NONE", VideoRange: "PQ", HDCPLevel: "NONE", FrameRate: 23.976},
+		"hdr10_1080/prog_index.m3u8":   {Bandwidth: 12886714, AverageBandwidth: 7964551, Codecs: "hvc1.2.4.L123.B0", Resolution: "1920x1080", Captions: "NONE", VideoRange: "PQ", HDCPLevel: "TYPE-0", FrameRate: 23.976},
+		"hdr10_2160/prog_index.m3u8":   {Bandwidth: 29983769, AverageBandwidth: 24833402, Codecs: "hvc1.2.4.L150.B0", Resolution: "3840x2160", Captions: "NONE", VideoRange: "PQ", HDCPLevel: "TYPE-1", FrameRate: 23.976},
+		"sdr_720/iframe_index.m3u8":    {Bandwidth: 593626, AverageBandwidth: 248586, Codecs: "hvc1.2.4.L123.B0", Resolution: "1280x720", Iframe: true, VideoRange: "SDR", HDCPLevel: "NONE"},
+		"sdr_1080/iframe_index.m3u8":   {Bandwidth: 956552, AverageBandwidth: 399790, Codecs: "hvc1.2.4.L123.B0", Resolution: "1920x1080", Iframe: true, VideoRange: "SDR", HDCPLevel: "TYPE-0"},
+		"sdr_2160/iframe_index.m3u8":   {Bandwidth: 1941397, AverageBandwidth: 826971, Codecs: "hvc1.2.4.L150.B0", Resolution: "3840x2160", Iframe: true, VideoRange: "SDR", HDCPLevel: "TYPE-1"},
+		"dolby_720/iframe_index.m3u8":  {Bandwidth: 573073, AverageBandwidth: 232253, Codecs: "dvh1.05.01", Resolution: "1280x720", Iframe: true, VideoRange: "PQ", HDCPLevel: "NONE"},
+		"dolby_1080/iframe_index.m3u8": {Bandwidth: 905037, AverageBandwidth: 365337, Codecs: "dvh1.05.03", Resolution: "1920x1080", Iframe: true, VideoRange: "PQ", HDCPLevel: "TYPE-0"},
+		"dolby_2160/iframe_index.m3u8": {Bandwidth: 1893236, AverageBandwidth: 739114, Codecs: "dvh1.05.06", Resolution: "3840x2160", Iframe: true, VideoRange: "PQ", HDCPLevel: "TYPE-1"},
+		"hdr10_720/iframe_index.m3u8":  {Bandwidth: 572673, AverageBandwidth: 232511, Codecs: "hvc1.2.4.L123.B0", Resolution: "1280x720", Iframe: true, VideoRange: "PQ", HDCPLevel: "NONE"},
+		"hdr10_1080/iframe_index.m3u8": {Bandwidth: 905053, AverageBandwidth: 364552, Codecs: "hvc1.2.4.L123.B0", Resolution: "1920x1080", Iframe: true, VideoRange: "PQ", HDCPLevel: "TYPE-0"},
+		"hdr10_2160/iframe_index.m3u8": {Bandwidth: 1895477, AverageBandwidth: 739757, Codecs: "hvc1.2.4.L150.B0", Resolution: "3840x2160", Iframe: true, VideoRange: "PQ", HDCPLevel: "TYPE-1"},
 	}
 	for _, variant := range p.Variants {
 		var found bool
diff --git a/structure.go b/structure.go
index 2a40ffb7..cedbbd0d 100644
--- a/structure.go
+++ b/structure.go
@@ -171,7 +171,7 @@ type VariantParams struct {
 	Name             string // EXT-X-STREAM-INF only (non standard Wowza/JWPlayer extension to name the variant/quality in UA)
 	Iframe           bool   // EXT-X-I-FRAME-STREAM-INF
 	VideoRange       string
-	HCDPLevel        string
+	HDCPLevel        string
 	FrameRate        float64        // EXT-X-STREAM-INF
 	Alternatives     []*Alternative // EXT-X-MEDIA
 }
diff --git a/writer.go b/writer.go
index 01e9574d..dd796df0 100644
--- a/writer.go
+++ b/writer.go
@@ -175,9 +175,9 @@ func (p *MasterPlaylist) Encode() *bytes.Buffer {
 				p.buf.WriteString(",VIDEO-RANGE=")
 				p.buf.WriteString(pl.VideoRange)
 			}
-			if pl.HCDPLevel != "" {
+			if pl.HDCPLevel != "" {
 				p.buf.WriteString(",HDCP-LEVEL=")
-				p.buf.WriteString(pl.HCDPLevel)
+				p.buf.WriteString(pl.HDCPLevel)
 			}
 			if pl.URI != "" {
 				p.buf.WriteString(",URI=\"")
@@ -241,9 +241,9 @@ func (p *MasterPlaylist) Encode() *bytes.Buffer {
 				p.buf.WriteString(",VIDEO-RANGE=")
 				p.buf.WriteString(pl.VideoRange)
 			}
-			if pl.HCDPLevel != "" {
+			if pl.HDCPLevel != "" {
 				p.buf.WriteString(",HDCP-LEVEL=")
-				p.buf.WriteString(pl.HCDPLevel)
+				p.buf.WriteString(pl.HDCPLevel)
 			}
 
 			p.buf.WriteRune('\n')
diff --git a/writer_test.go b/writer_test.go
index 350d6b90..8a9410bc 100644
--- a/writer_test.go
+++ b/writer_test.go
@@ -944,8 +944,8 @@ func ExampleMasterPlaylist_String_with_hlsv7() {
 	m.SetVersion(7)
 	m.SetIndependentSegments(true)
 	p, _ := NewMediaPlaylist(3, 5)
-	m.Append("hdr10_1080/prog_index.m3u8", p, VariantParams{AverageBandwidth: 7964551, Bandwidth: 12886714, VideoRange: "PQ", Codecs: "hvc1.2.4.L123.B0", Resolution: "1920x1080", FrameRate: 23.976, Captions: "NONE", HCDPLevel: "TYPE-0"})
-	m.Append("hdr10_1080/iframe_index.m3u8", p, VariantParams{Iframe: true, AverageBandwidth: 364552, Bandwidth: 905053, VideoRange: "PQ", Codecs: "hvc1.2.4.L123.B0", Resolution: "1920x1080", HCDPLevel: "TYPE-0"})
+	m.Append("hdr10_1080/prog_index.m3u8", p, VariantParams{AverageBandwidth: 7964551, Bandwidth: 12886714, VideoRange: "PQ", Codecs: "hvc1.2.4.L123.B0", Resolution: "1920x1080", FrameRate: 23.976, Captions: "NONE", HDCPLevel: "TYPE-0"})
+	m.Append("hdr10_1080/iframe_index.m3u8", p, VariantParams{Iframe: true, AverageBandwidth: 364552, Bandwidth: 905053, VideoRange: "PQ", Codecs: "hvc1.2.4.L123.B0", Resolution: "1920x1080", HDCPLevel: "TYPE-0"})
 	fmt.Printf("%s", m)
 	// Output:
 	// #EXTM3U