diff --git a/core/java/android/os/WorkSource.java b/core/java/android/os/WorkSource.java
index f8da87ab4702..0a20a03ab542 100644
--- a/core/java/android/os/WorkSource.java
+++ b/core/java/android/os/WorkSource.java
@@ -93,7 +93,7 @@ public int get(int index) {
 
     /** @hide */
     public String getName(int index) {
-        return mNames != null ? mNames[index] : null;
+        return mNames != null && nNames.length > index ? mNames[index] : null;
     }
 
     /**