diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 53acfb8193..125ca8ccc9 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -176,6 +176,7 @@
         timestamps ([#7464](https://github.com/google/ExoPlayer/issues/7464)).
 *   Ogg: Allow non-contiguous pages
     ([#7230](https://github.com/google/ExoPlayer/issues/7230)).
+*   Matroska: Remove support for "Invisible" block header flag.
 *   Extractors:
     *   Add `IndexSeeker` for accurate seeks in VBR MP3 streams
         ([#6787](https://github.com/google/ExoPlayer/issues/6787)). This seeker
diff --git a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mkv/MatroskaExtractor.java b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mkv/MatroskaExtractor.java
index 6d28e870a4..de6d1c19c6 100644
--- a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mkv/MatroskaExtractor.java
+++ b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mkv/MatroskaExtractor.java
@@ -1196,11 +1196,9 @@ public class MatroskaExtractor implements Extractor {
 
           int timecode = (scratch.data[0] << 8) | (scratch.data[1] & 0xFF);
           blockTimeUs = clusterTimecodeUs + scaleTimecodeToUs(timecode);
-          boolean isInvisible = (scratch.data[2] & 0x08) == 0x08;
           boolean isKeyframe = track.type == TRACK_TYPE_AUDIO
               || (id == ID_SIMPLE_BLOCK && (scratch.data[2] & 0x80) == 0x80);
-          blockFlags = (isKeyframe ? C.BUFFER_FLAG_KEY_FRAME : 0)
-              | (isInvisible ? C.BUFFER_FLAG_DECODE_ONLY : 0);
+          blockFlags = isKeyframe ? C.BUFFER_FLAG_KEY_FRAME : 0;
           blockState = BLOCK_STATE_DATA;
           blockSampleIndex = 0;
         }