diff --git a/foudations/mogo-commons/src/main/java/com/mogo/commons/voice/AIAssist.java b/foudations/mogo-commons/src/main/java/com/mogo/commons/voice/AIAssist.java
index bb589895f3..5f441eb835 100644
--- a/foudations/mogo-commons/src/main/java/com/mogo/commons/voice/AIAssist.java
+++ b/foudations/mogo-commons/src/main/java/com/mogo/commons/voice/AIAssist.java
@@ -117,9 +117,15 @@ public class AIAssist implements VoiceClient.VoiceCmdCallBack, OnTtsListener {
             return;
         }
         Logger.d( TAG, "received command: %s", cmd );
-        final List< IMogoVoiceCmdCallBack > cmdCallBacks = mCmdMap.get( cmd );
-        Iterator< IMogoVoiceCmdCallBack > iterator = cmdCallBacks.iterator();
-        while ( iterator.hasNext() ) {
+
+        Iterator< IMogoVoiceCmdCallBack > iterator = null;
+        try {
+            List< IMogoVoiceCmdCallBack > cmdCallBacks  = mCmdMap.get( cmd );
+            iterator = new ArrayList<>( cmdCallBacks ).iterator();
+        } catch( Exception e ){
+
+        }
+        while ( iterator != null && iterator.hasNext() ) {
             IMogoVoiceCmdCallBack callBack = iterator.next();
             if ( callBack != null ) {
                 callBack.onCmdSelected( cmd );