diff --git a/renren-admin/src/main/java/io/renren/modules/activiti/controller/ActTaskController.java b/renren-admin/src/main/java/io/renren/modules/activiti/controller/ActTaskController.java
index 4fef4fe1..be2a19b7 100644
--- a/renren-admin/src/main/java/io/renren/modules/activiti/controller/ActTaskController.java
+++ b/renren-admin/src/main/java/io/renren/modules/activiti/controller/ActTaskController.java
@@ -124,8 +124,9 @@ public class ActTaskController {
                             TaskDTO taskDTO = JSON.parseObject(JSON.toJSONString(index), TaskDTO.class);
                             return taskDTO;
                         }).collect(Collectors.toList());
-                page.getList().addAll(meetingroom_bookTaskDto);
-                page.setList(page.getList());
+                List<TaskDTO> temp = page.getList();
+                temp.addAll(meetingroom_bookTaskDto);
+                page.setList(temp);
             }
         }
         return new Result<PageData<TaskDTO>>().ok(page);