diff --git a/broker/src/main/java/cn/wildfirechat/push/PushMessage.java b/broker/src/main/java/cn/wildfirechat/push/PushMessage.java
index 497c8b73..3df03f87 100644
--- a/broker/src/main/java/cn/wildfirechat/push/PushMessage.java
+++ b/broker/src/main/java/cn/wildfirechat/push/PushMessage.java
@@ -43,7 +43,7 @@ public class PushMessage {
         this.cntType = messageContentType;
         this.serverTime = serverTime;
         this.unReceivedMsg = unReceivedMsg;
-        if (cntType == 400) {
+        if (cntType == 400 || cntType == 406) {
             this.pushMessageType = PushServer.PushMessageType.PUSH_MESSAGE_TYPE_VOIP_INVITE;
         } else if(cntType == 402) {
             this.pushMessageType = PushServer.PushMessageType.PUSH_MESSAGE_TYPE_VOIP_BYE;
diff --git a/broker/src/main/java/io/moquette/spi/impl/MessagesPublisher.java b/broker/src/main/java/io/moquette/spi/impl/MessagesPublisher.java
index ecf011f5..3d595974 100755
--- a/broker/src/main/java/io/moquette/spi/impl/MessagesPublisher.java
+++ b/broker/src/main/java/io/moquette/spi/impl/MessagesPublisher.java
@@ -332,7 +332,7 @@ public class MessagesPublisher {
                         }
                     }
 
-                    if ((StringUtil.isNullOrEmpty(pushContent) && messageContentType != 402 && messageContentType != 400 && messageContentType != 401)) {
+                    if ((StringUtil.isNullOrEmpty(pushContent) && messageContentType != 402 && messageContentType != 400 && messageContentType != 401 && messageContentType != 406)) {
                         LOG.info("push content is empty and contenttype is {}", messageContentType);
                         continue;
                     }