diff --git a/src/main/java/cn/iocoder/dashboard/modules/system/service/permission/impl/SysPermissionServiceImpl.java b/src/main/java/cn/iocoder/dashboard/modules/system/service/permission/impl/SysPermissionServiceImpl.java
index 9f48af9f5..835fb8961 100644
--- a/src/main/java/cn/iocoder/dashboard/modules/system/service/permission/impl/SysPermissionServiceImpl.java
+++ b/src/main/java/cn/iocoder/dashboard/modules/system/service/permission/impl/SysPermissionServiceImpl.java
@@ -123,7 +123,7 @@ public class SysPermissionServiceImpl implements SysPermissionService {
         if (maxUpdateTime == null) { // 如果更新时间为空，说明 DB 一定有新数据
             log.info("[loadRoleMenuIfUpdate][首次加载全量角色与菜单的关联]");
         } else { // 判断数据库中是否有更新的角色与菜单的关联
-            if (!roleMenuMapper.selectExistsByUpdateTimeAfter(maxUpdateTime)) {
+            if (roleMenuMapper.selectExistsByUpdateTimeAfter(maxUpdateTime).size() == 0) {
                 return null;
             }
             log.info("[loadRoleMenuIfUpdate][增量加载全量角色与菜单的关联]");