diff --git a/engine/orchestration/src/com/cloud/agent/manager/SynchronousListener.java b/engine/orchestration/src/com/cloud/agent/manager/SynchronousListener.java
index 11d278cc3c0..5da1b27abfe 100755
--- a/engine/orchestration/src/com/cloud/agent/manager/SynchronousListener.java
+++ b/engine/orchestration/src/com/cloud/agent/manager/SynchronousListener.java
@@ -48,7 +48,7 @@ public class SynchronousListener implements Listener {
         return _peer;
     }
 
-    public Answer[] getAnswers() {
+    public synchronized Answer[] getAnswers() {
         return _answers;
     }