diff --git a/testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeAdaptiveMediaPeriod.java b/testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeAdaptiveMediaPeriod.java
index 1e3b3bf82b..a9c19fbc8d 100644
--- a/testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeAdaptiveMediaPeriod.java
+++ b/testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeAdaptiveMediaPeriod.java
@@ -60,6 +60,7 @@ public class FakeAdaptiveMediaPeriod extends FakeMediaPeriod
     this.transferListener = transferListener;
     this.durationUs = durationUs;
     this.sampleStreams = newSampleStreamArray(0);
+    this.sequenceableLoader = new CompositeSequenceableLoader(new SequenceableLoader[0]);
   }
 
   @Override