diff --git a/internal/core/hls_source_test.go b/internal/core/hls_source_test.go
index 2d6b9856..27a2efa6 100644
--- a/internal/core/hls_source_test.go
+++ b/internal/core/hls_source_test.go
@@ -54,7 +54,7 @@ func (ts *testHLSServer) onPlaylist(ctx *gin.Context) {
 segment.ts
 `
 
-	ctx.Writer.Header().Set("Content-Type", `audio/mpegURL`)
+	ctx.Writer.Header().Set("Content-Type", `application/x-mpegURL`)
 	io.Copy(ctx.Writer, bytes.NewReader([]byte(cnt)))
 }
 
diff --git a/internal/hls/client_test.go b/internal/hls/client_test.go
index d575e0fe..c07ed3a4 100644
--- a/internal/hls/client_test.go
+++ b/internal/hls/client_test.go
@@ -122,7 +122,7 @@ func newTestHLSServer(ca string) (*testHLSServer, error) {
 #EXTINF:2,
 ` + segment + "\n"
 
-		ctx.Writer.Header().Set("Content-Type", `audio/mpegURL`)
+		ctx.Writer.Header().Set("Content-Type", `application/x-mpegURL`)
 		io.Copy(ctx.Writer, bytes.NewReader([]byte(cnt)))
 	})
 
diff --git a/internal/hls/muxer_primary_playlist.go b/internal/hls/muxer_primary_playlist.go
index bcb307a8..c466008e 100644
--- a/internal/hls/muxer_primary_playlist.go
+++ b/internal/hls/muxer_primary_playlist.go
@@ -33,7 +33,7 @@ func (p *muxerPrimaryPlaylist) file() *MuxerFileResponse {
 	return &MuxerFileResponse{
 		Status: http.StatusOK,
 		Header: map[string]string{
-			"Content-Type": `audio/mpegURL`,
+			"Content-Type": `application/x-mpegURL`,
 		},
 		Body: func() io.Reader {
 			var codecs []string
diff --git a/internal/hls/muxer_variant_fmp4_playlist.go b/internal/hls/muxer_variant_fmp4_playlist.go
index d932538b..beda273a 100644
--- a/internal/hls/muxer_variant_fmp4_playlist.go
+++ b/internal/hls/muxer_variant_fmp4_playlist.go
@@ -221,7 +221,7 @@ func (p *muxerVariantFMP4Playlist) playlistReader(msn string, part string, skip
 			return &MuxerFileResponse{
 				Status: http.StatusOK,
 				Header: map[string]string{
-					"Content-Type": `audio/mpegURL`,
+					"Content-Type": `application/x-mpegURL`,
 				},
 				Body: p.fullPlaylist(isDeltaUpdate),
 			}
@@ -247,7 +247,7 @@ func (p *muxerVariantFMP4Playlist) playlistReader(msn string, part string, skip
 	return &MuxerFileResponse{
 		Status: http.StatusOK,
 		Header: map[string]string{
-			"Content-Type": `audio/mpegURL`,
+			"Content-Type": `application/x-mpegURL`,
 		},
 		Body: p.fullPlaylist(isDeltaUpdate),
 	}
diff --git a/internal/hls/muxer_variant_mpegts_playlist.go b/internal/hls/muxer_variant_mpegts_playlist.go
index 88a01a2a..a7762b34 100644
--- a/internal/hls/muxer_variant_mpegts_playlist.go
+++ b/internal/hls/muxer_variant_mpegts_playlist.go
@@ -101,7 +101,7 @@ func (p *muxerVariantMPEGTSPlaylist) playlistReader() *MuxerFileResponse {
 	return &MuxerFileResponse{
 		Status: http.StatusOK,
 		Header: map[string]string{
-			"Content-Type": `audio/mpegURL`,
+			"Content-Type": `application/x-mpegURL`,
 		},
 		Body: p.playlist(),
 	}