diff --git a/tests/net/java/android/net/nsd/NsdManagerTest.java b/tests/net/java/android/net/nsd/NsdManagerTest.java
index 063cd5d..adf6998 100644
--- a/tests/net/java/android/net/nsd/NsdManagerTest.java
+++ b/tests/net/java/android/net/nsd/NsdManagerTest.java
@@ -333,7 +333,7 @@
     public static class MockServiceHandler extends Handler {
         public Context mContext;
         public AsyncChannel chan;
-        public Message lastMessage;
+        public volatile Message lastMessage;
 
         MockServiceHandler(Looper looper, Context context) {
             super(looper);