diff --git a/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseScheduleSessionService.java b/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseScheduleSessionService.java
index 7685c376..d34b6a4e 100644
--- a/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseScheduleSessionService.java
+++ b/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseScheduleSessionService.java
@@ -594,7 +594,7 @@ public class TeacherOpenCourseScheduleSessionService extends CoreBaseService<Tea
 
     @Builder
     @Getter
-    class SessionTagTemp {
+    protected static class SessionTagTemp {
         private String firstTagName;
         private String secondTagName ;
         private DateTime firstStartTime;