diff --git a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/service/impl/BpmnProcessInstanceServiceImpl.java b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/service/impl/BpmnProcessInstanceServiceImpl.java
index 27a1205da..0c68e513f 100644
--- a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/service/impl/BpmnProcessInstanceServiceImpl.java
+++ b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/service/impl/BpmnProcessInstanceServiceImpl.java
@@ -1409,7 +1409,7 @@ public class BpmnProcessInstanceServiceImpl implements BpmnProcessInstanceServic
                     .findAny()
                     .ifPresent(i -> {
                         authorizedButtons.addAll(chooseButtons(logVO, CONFIG_BUTTON_TYPE_CURRENT));
-                        supportUpgrade.set(i.getSupportUpgradeApproval());
+                        supportUpgrade.set(Objects.equals(Boolean.TRUE,i.getSupportUpgradeApproval()));
                     });