diff --git a/testutils/src/main/java/com/google/android/exoplayer2/testutil/StubExoPlayer.java b/testutils/src/main/java/com/google/android/exoplayer2/testutil/StubExoPlayer.java
index 722fca7895..dfcada0e9b 100644
--- a/testutils/src/main/java/com/google/android/exoplayer2/testutil/StubExoPlayer.java
+++ b/testutils/src/main/java/com/google/android/exoplayer2/testutil/StubExoPlayer.java
@@ -39,7 +39,7 @@ import java.util.List;
  * An abstract {@link ExoPlayer} implementation that throws {@link UnsupportedOperationException}
  * from every method.
  */
-public abstract class StubExoPlayer extends BasePlayer implements ExoPlayer {
+public class StubExoPlayer extends BasePlayer implements ExoPlayer {
 
   @Override
   public AudioComponent getAudioComponent() {