diff --git a/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java b/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java
index 857928f8..b5468025 100755
--- a/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java
+++ b/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java
@@ -1963,6 +1963,14 @@ public class MemoryMessagesStore implements IMessagesStore {
             newInfoBuilder.setPrivateChat(Integer.parseInt(value));
         else if(modifyType == Modify_Group_Searchable)
             newInfoBuilder.setSearchable(Integer.parseInt(value));
+        else if(modifyType == Modify_Group_Type) {
+            int newType = Integer.parseInt(value);
+            if(newType < 0 || newType > ProtoConstants.GroupType.GroupType_Organization) {
+                LOG.error("modify group type failure, invalid group type {}", newType);
+                return ErrorCode.INVALID_PARAMETER;
+            }
+            newInfoBuilder.setType(newType);
+        }
         else
             return ErrorCode.INVALID_PARAMETER;
 
diff --git a/common/src/main/java/cn/wildfirechat/proto/ProtoConstants.java b/common/src/main/java/cn/wildfirechat/proto/ProtoConstants.java
index 1dde35dd..2fff6520 100644
--- a/common/src/main/java/cn/wildfirechat/proto/ProtoConstants.java
+++ b/common/src/main/java/cn/wildfirechat/proto/ProtoConstants.java
@@ -172,6 +172,7 @@ public class ProtoConstants {
         int Modify_Group_Max_Member_Count = 8;
         //仅专业版的server api支持
         int Modify_Group_Super_Group = 9;
+        int Modify_Group_Type = 10;
     }
 
     //ModifyGroupInfoRequest -> type