diff --git a/im-center-server/src/main/java/cn/axzo/im/entity/MessageTask.java b/im-center-server/src/main/java/cn/axzo/im/entity/MessageTask.java
index bf4a5fc..7ab2e78 100644
--- a/im-center-server/src/main/java/cn/axzo/im/entity/MessageTask.java
+++ b/im-center-server/src/main/java/cn/axzo/im/entity/MessageTask.java
@@ -187,7 +187,7 @@ public class MessageTask {
             if (StringUtils.isNotBlank(this.getImAccount())) {
                 return this.getImAccount();
             }
-            return this.getPersonId() + "_" + this.getAppType() + "_" + this.getOuId();
+            return this.getPersonId() + "_" + this.getAppType().getCode() + "_" + this.getOuId();
         }
     }