diff --git a/library/hls/src/main/java/com/google/android/exoplayer2/source/hls/WebvttExtractor.java b/library/hls/src/main/java/com/google/android/exoplayer2/source/hls/WebvttExtractor.java
index 12ea2c16c71..0b8f7f36a6d 100644
--- a/library/hls/src/main/java/com/google/android/exoplayer2/source/hls/WebvttExtractor.java
+++ b/library/hls/src/main/java/com/google/android/exoplayer2/source/hls/WebvttExtractor.java
@@ -141,8 +141,7 @@ private void processSample() throws ParserException {
           throw new ParserException("X-TIMESTAMP-MAP doesn't contain media timestamp: " + line);
         }
         vttTimestampUs = WebvttParserUtil.parseTimestampUs(localTimestampMatcher.group(1));
-        tsTimestampUs = TimestampAdjuster.ptsToUs(
-            Long.parseLong(mediaTimestampMatcher.group(1)));
+        tsTimestampUs = TimestampAdjuster.ptsToUs(Long.parseLong(mediaTimestampMatcher.group(1)));
       }
     }
 
@@ -155,8 +154,8 @@ private void processSample() throws ParserException {
     }
 
     long firstCueTimeUs = WebvttParserUtil.parseTimestampUs(cueHeaderMatcher.group(1));
-    long sampleTimeUs = timestampAdjuster.adjustSampleTimestamp(
-        firstCueTimeUs + tsTimestampUs - vttTimestampUs);
+    long sampleTimeUs = timestampAdjuster.adjustTsTimestamp(
+        TimestampAdjuster.usToPts(firstCueTimeUs + tsTimestampUs - vttTimestampUs));
     long subsampleOffsetUs = sampleTimeUs - firstCueTimeUs;
     // Output the track.
     TrackOutput trackOutput = buildTrackOutput(subsampleOffsetUs);