diff --git a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomCreateDummyTaskCmd.java b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomCreateDummyTaskCmd.java
index e65e3d8b3..5ea618443 100644
--- a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomCreateDummyTaskCmd.java
+++ b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomCreateDummyTaskCmd.java
@@ -25,8 +25,8 @@ import java.util.List;
 import java.util.Objects;
 
 import static cn.axzo.workflow.common.constant.BpmnConstants.COMMENT_TYPE_OPERATION_DESC;
-import static cn.axzo.workflow.common.constant.BpmnConstants.DUMMY_ASSIGNEE_ID;
 import static cn.axzo.workflow.common.constant.BpmnConstants.HIDDEN_ASSIGNEE_ID;
+import static cn.axzo.workflow.common.constant.BpmnConstants.NO_ASSIGNEE;
 import static cn.axzo.workflow.common.constant.BpmnConstants.TASK_ASSIGNEE_SKIP_FLAT;
 import static cn.axzo.workflow.common.enums.BpmnFlowNodeType.NODE_ROBOT;
 import static cn.axzo.workflow.core.common.code.BpmnTaskRespCode.DUMMY_TASK_CANT_CREATED;
@@ -79,7 +79,7 @@ public class CustomCreateDummyTaskCmd implements Command<String>, Serializable {
         TaskService taskService = processEngineConfiguration.getTaskService();
         List<Task> activeTaskList = taskService.createTaskQuery().processInstanceId(processInstanceId).active().list();
 
-        activeTaskList.stream().filter(task -> Objects.equals(task.getAssignee(), DUMMY_ASSIGNEE_ID)).findAny().ifPresent(task -> {
+        activeTaskList.stream().filter(task -> Objects.equals(task.getAssignee(), NO_ASSIGNEE)).findAny().ifPresent(task -> {
             throw new WorkflowEngineException(DUMMY_TASK_CANT_CREATED, processInstanceId);
         });
         activeTaskList.stream().filter(task -> Objects.equals(task.getTaskDefinitionKey(), NODE_ROBOT.getType())).findAny().ifPresent(task -> {