diff --git a/broker/src/main/java/io/moquette/imhandler/ModifyGroupInfoHandler.java b/broker/src/main/java/io/moquette/imhandler/ModifyGroupInfoHandler.java
index 681ded5a..8675aae7 100644
--- a/broker/src/main/java/io/moquette/imhandler/ModifyGroupInfoHandler.java
+++ b/broker/src/main/java/io/moquette/imhandler/ModifyGroupInfoHandler.java
@@ -44,6 +44,8 @@ public class ModifyGroupInfoHandler extends GroupHandler<WFCMessage.ModifyGroupI
                     content = new GroupNotificationBinaryContent(request.getGroupId(), fromUser, request.getValue(), "").getChangeGroupPrivatechatNotifyContent();
                 } else if(request.getType() == Modify_Group_Searchable) {
                     content = new GroupNotificationBinaryContent(request.getGroupId(), fromUser, request.getValue(), "").getChangeGroupSearchableNotifyContent();
+                } else if(request.getType() == Modify_Group_Extra) {
+                    content = new GroupNotificationBinaryContent(request.getGroupId(), fromUser, request.getValue(), "").getChangeGroupExtraNotifyContent();
                 }
 
                 if (content != null) {
diff --git a/common/src/main/java/cn/wildfirechat/pojos/GroupNotificationBinaryContent.java b/common/src/main/java/cn/wildfirechat/pojos/GroupNotificationBinaryContent.java
index 1976ab76..99229548 100644
--- a/common/src/main/java/cn/wildfirechat/pojos/GroupNotificationBinaryContent.java
+++ b/common/src/main/java/cn/wildfirechat/pojos/GroupNotificationBinaryContent.java
@@ -160,4 +160,9 @@ public class GroupNotificationBinaryContent {
     public WFCMessage.MessageContent getAllowGroupMemberNotifyContent() {
         return getGroupNotifyContent(ProtoConstants.MESSAGE_CONTENT_TYPE_ALLOW_MEMBER);
     }
+
+    public WFCMessage.MessageContent getChangeGroupExtraNotifyContent() {
+        return getGroupNotifyContent(ProtoConstants.MESSAGE_CONTENT_TYPE_MODIFY_GROUP_EXTRA);
+    }
+
 }
diff --git a/common/src/main/java/cn/wildfirechat/proto/ProtoConstants.java b/common/src/main/java/cn/wildfirechat/proto/ProtoConstants.java
index 9cce0922..5d52ac49 100644
--- a/common/src/main/java/cn/wildfirechat/proto/ProtoConstants.java
+++ b/common/src/main/java/cn/wildfirechat/proto/ProtoConstants.java
@@ -234,5 +234,7 @@ public class ProtoConstants {
     public static final int MESSAGE_CONTENT_TYPE_ALLOW_MEMBER = 119;
     public static final int MESSAGE_CONTENT_TYPE_KICKOF_GROUP_MEMBER_VISIBLE = 120;
     public static final int MESSAGE_CONTENT_TYPE_QUIT_GROUP_VISIBLE = 121;
+
+    public static final int MESSAGE_CONTENT_TYPE_MODIFY_GROUP_EXTRA = 122;
 }