diff --git a/core/java/android/os/WorkSource.java b/core/java/android/os/WorkSource.java
index e0927ebd261aa..6588b5748d096 100644
--- a/core/java/android/os/WorkSource.java
+++ b/core/java/android/os/WorkSource.java
@@ -435,6 +435,7 @@ public class WorkSource implements Parcelable {
                 for (WorkChain wc : other.mChains) {
                     if (!mChains.contains(wc)) {
                         mChains.add(new WorkChain(wc));
+                        chainAdded = true;
                     }
                 }
             }