diff --git a/extensions/cronet/src/test/java/com/google/android/exoplayer2/ext/cronet/CronetDataSourceTest.java b/extensions/cronet/src/test/java/com/google/android/exoplayer2/ext/cronet/CronetDataSourceTest.java
index 5835e29c06..2413ce6f59 100644
--- a/extensions/cronet/src/test/java/com/google/android/exoplayer2/ext/cronet/CronetDataSourceTest.java
+++ b/extensions/cronet/src/test/java/com/google/android/exoplayer2/ext/cronet/CronetDataSourceTest.java
@@ -156,7 +156,7 @@ public final class CronetDataSourceTest {
 
       @Override
       public List<String> getUrlChain() {
-        return null;
+        return Collections.singletonList(url);
       }
 
       @Override