diff --git a/libraries/exoplayer/src/test/java/androidx/media3/exoplayer/text/DelegatingSubtitleDecoderWithSubripParserTest.java b/libraries/exoplayer/src/test/java/androidx/media3/exoplayer/text/DelegatingSubtitleDecoderWithSubripParserTest.java
index 9e8a650955..444e4c8b95 100644
--- a/libraries/exoplayer/src/test/java/androidx/media3/exoplayer/text/DelegatingSubtitleDecoderWithSubripParserTest.java
+++ b/libraries/exoplayer/src/test/java/androidx/media3/exoplayer/text/DelegatingSubtitleDecoderWithSubripParserTest.java
@@ -27,9 +27,9 @@ import java.io.IOException;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-/** Unit test for a DelegatingSubtitleDecoder backed by {@link SubripParser}. */
+/** Unit test for a {@link DelegatingSubtitleDecoder} backed by {@link SubripParser}. */
 @RunWith(AndroidJUnit4.class)
-public class DelegatingSubtitleDecoderWithSubripParserTest {
+public final class DelegatingSubtitleDecoderWithSubripParserTest {
 
   private static final String EMPTY_FILE = "media/subrip/empty";
   private static final String TYPICAL_FILE = "media/subrip/typical";
diff --git a/libraries/exoplayer/src/test/java/androidx/media3/exoplayer/text/DelegatingDecoderWithTx3gParserTest.java b/libraries/exoplayer/src/test/java/androidx/media3/exoplayer/text/DelegatingSubtitleDecoderWithTx3gParserTest.java
similarity index 99%
rename from libraries/exoplayer/src/test/java/androidx/media3/exoplayer/text/DelegatingDecoderWithTx3gParserTest.java
rename to libraries/exoplayer/src/test/java/androidx/media3/exoplayer/text/DelegatingSubtitleDecoderWithTx3gParserTest.java
index 1ea1970d9a..4617a5e63e 100644
--- a/libraries/exoplayer/src/test/java/androidx/media3/exoplayer/text/DelegatingDecoderWithTx3gParserTest.java
+++ b/libraries/exoplayer/src/test/java/androidx/media3/exoplayer/text/DelegatingSubtitleDecoderWithTx3gParserTest.java
@@ -34,7 +34,7 @@ import org.junit.runner.RunWith;
 
 /** Unit test for a {@link DelegatingSubtitleDecoder} backed by {@link Tx3gParser}. */
 @RunWith(AndroidJUnit4.class)
-public final class DelegatingDecoderWithTx3gParserTest {
+public final class DelegatingSubtitleDecoderWithTx3gParserTest {
   private static final String NO_SUBTITLE = "media/tx3g/no_subtitle";
   private static final String SAMPLE_JUST_TEXT = "media/tx3g/sample_just_text";
   private static final String SAMPLE_WITH_STYL = "media/tx3g/sample_with_styl";